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EnglishMOBILITY -> Wheels and tires for your BMW X4 2019-2025
Wheels and tires
MOBILITY
Wheels and tires
Tire pressure specifications
Vehicle features and options
In the tire inflation pressure table
This chapter describes all standard, country-
specific, and optional equipment offered with
the series. It also describes features and func-
tions that are not necessarily available in the
vehicle, e.g., due to the selected options or
country versions. This also applies to safety
functions and systems. When using these
functions and systems, the applicable laws
and regulations must be observed.
The tire inflation pressure table contains all tire
inflation pressure specifications for the speci-
fied tire sizes at the ambient temperature. The
tire inflation pressure values apply to tire sizes
recommended by the manufacturer of the ve-
hicle for the vehicle type.
To identify the correct tire inflation pressure,
please note the following:
▷
▷
Tire sizes of the vehicle.
Maximum speed for driving.
Tire pressure
On the control display
General information
The tire condition and tire pressure influence
the following:
The current tire inflation pressure values and
the intended tire inflation pressure values for
the mounted tires can be displayed on the con-
trol display.
▷
▷
▷
▷
The service life of the tires.
Driving safety.
To ensure that they are displayed correctly, the
tire sizes must be stored in the system and
must have been set for the mounted tires.
Driving comfort.
Fuel consumption.
The current tire inflation pressure value is lo-
cated on each tire.
Safety information
The reference tire inflation pressure value is
located in the lower area of the control display.
Warning
A tire with too little or no tire inflation pres-
sure may heat up significantly and sustain
damage. This will have a negative impact
on aspects of handling such as steering and
braking response. There is a risk of accident,
injury, and property damage. Regularly check
the tire inflation pressure, and correct it as
needed, for instance twice a month and be-
fore a long trip.
Checking the tire pressure
General information
Tires heat up while driving. The tire pressure
increases with the tire temperature.
Tires have a natural, consistent tire pressure
loss.
The displays of inflation devices may under-
read by up to 0.1 bar/2 psi.
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Wheels and tires
MOBILITY
Checking using tire inflation pressure
specifications in the tire inflation
pressure table
1. Determine the intended tire inflation pres-
sure levels for the mounted tires.
After correcting the tire pressure
For the flat tire monitor:
Reinitialize the Flat Tire Monitor.
With Tire Pressure Monitor:
The corrected tire inflation pressures are ap-
plied automatically. Make sure that the correct
tire settings have been made.
2. Check the tire inflation pressure in all four
tires, using a pressure gage, for example.
3. Correct the tire inflation pressure if the ac-
tual tire inflation pressure deviates from the
intended tire inflation pressure.
With tires that cannot be found in the tire pres-
sure values on the control display, reset the
Tire Pressure Monitor (TPM).
4. Check whether all valve caps are screwed
onto the tire valves.
Tire inflation pressures up to
100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and
for optimum driving comfort, note the pressure
values in the tire inflation pressure table and
adjust as necessary.
The tire inflation pressure specifications in the
tire inflation pressure table only relate to cold
tires or tires at the same temperature as the
ambient temperature.
Only check the tire inflation pressure levels
when the tires are cold, i.e.:
▷
A distance traveled of max. 1.25 miles/2 km
has not been exceeded.
▷
If the vehicle has not moved again for at
least 2 hours after a trip.
Check the tire inflation pressure of the emer-
gency wheel in the cargo area regularly, and
correct it as needed.
Checking using the tire inflation
pressure specifications on the control
display
These pressure values can also be found on
the tire pressure label on the driver's door pil-
lar.
1. "CAR"
Do not exceed a speed of 100 mph/160 km/h.
2. "Vehicle status"
3.
"Tire Pressure Monitor"
4. Check whether the current tire inflation
pressure levels deviate from the intended
tire pressure value.
5. Correct the tire inflation pressure if the ac-
tual tire inflation pressure deviates from the
intended tire inflation pressure.
The display of the current tire pressure may be
limited when the vehicle is stationary. After a
short drive, the tire pressure is updated.
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MOBILITY
Tire pressure values up to
100 mph/160 km/h
Tire size
Pressure specifications
in bar/PSI
Rear: 275/40 R
20 106 V XL
M+S
-
2.4 / 35
X4 xDrive30i
Tire size
Pressure specifications
in bar/PSI
Emergency
wheel:
Speed up to a max. of
50 mph / 80 km/h
Specifications in
bar/PSI with
cold tires
T 135/80 R 18
104 M
4.2 / 60
X4 M40i
225/60 R 18 104 2.4 / 35
H XL A/S
2.6 / 38
2.6 / 38
Tire size
Pressure specifications in
bar/PSI
245/50 R 19 105
H XL A/S
Specifications in
bar/PSI with
cold tires
225/60 R 18 104
H XL M+S
245/50 R 19 105 2.4 / 35
W XL
245/50 R 19 105 2.4 / 35
W XL
2.6 / 38
245/50 R 19 105
V XL M+S
245/50 R 19 105
H XL A/S
Front: 245/45 R 2.2 / 32
20 103 Y XL
-
245/50 R 19 105
V XL M+S
Rear: 275/40 R
20 106 Y XL
-
2.4 / 35
Front: 245/45 R 2.2 / 32
20 103 Y XL
-
Front: 245/45 R 2.2 / 32
20 103 W XL
-
Rear: 275/40 R
20 106 Y XL
-
2.4 / 35
Rear: 275/40 R
20 106 W XL
-
2.4 / 35
Front: 245/45 R 2.2 / 32
20 103 W XL
-
Front: 245/40 R 2.5 / 36
21 100 Y XL
-
Rear: 275/40 R
20 106 W XL
-
2.4 / 35
-
Rear: 275/35 R
21 103 Y XL
-
2.7 / 39
-
Front: 245/40 R 2.5 / 36
21 100 Y XL
Front: 245/45 R 2.2 / 32
20 103 V XL
M+S
Rear: 275/35 R
21 103 Y XL
-
2.7 / 39
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Wheels and tires
MOBILITY
Tire size
Pressure specifications in
bar/PSI
Tire size
Pressure specifications
in bar/PSI
Front: 245/45 R 2.2 / 32
20 103 V XL
M+S
-
Specifications in
bar/PSI with
cold tires
Rear: 275/40 R
20 106 V XL
M+S
-
2.4 / 35
225/60 R 18 104 2.6 / 38
H XL A/S
2.8 / 41
2.8 / 41
Emergency
wheel:
Speed up to a max. of
50 mph / 80 km/h
245/50 R 19 105
H XL A/S
T 135/80 R 18
104 M
4.2 / 60
225/60 R 18 104
H XL M+S
245/50 R 19 105 2.6 / 38
W XL
Tire pressures, 100 mph/160 km/h
245/50 R 19 105
V XL M+S
Warning
When driving at speeds greater than
100 mph/160 km/h, incorrect tire pressures
can negatively affect vehicle handling, e.g.,
safety or comfort while driving. The tires can
become damaged, which may cause an ac-
cident. There is a risk of accident, injury,
and property damage. To drive at maximum
speeds, note the specified tire pressure for
driving above 100 mph/160 km/h in the tire
inflation pressure table, and adjust as neces-
sary.
Front: 245/45 R 2.2 / 32
20 103 Y XL
-
Rear: 275/40 R
20 106 Y XL
-
2.4 / 35
Front: 245/45 R 2.4 / 35
20 103 W XL
-
Rear: 275/40 R
20 106 W XL
-
2.6 / 38
Front: 245/40 R 2.5 / 36
21 100 Y XL
-
Rear: 275/35 R
21 103 Y XL
-
2.7 / 39
-
Tire pressure values over
100 mph/160 km/h
Front: 245/45 R 2.5 / 36
20 103 V XL
X4 xDrive30i
M+S
Without high-speed tuning feature
Rear: 275/40 R
20 106 V XL
M+S
-
2.7 / 39
Emergency
wheel:
Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18
104 M
4.2 / 60
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Wheels and tires
MOBILITY
With high-speed tuning feature
Tire size
Pressure specifications in
bar/PSI
Tire size
Pressure specifications in
bar/PSI
Specifications in
bar/PSI with
cold tires
Specifications in
bar/PSI with
cold tires
245/50 R 19 105 2.9 / 42
W XL
3.1 / 45
3.3 / 48
225/60 R 18
104 H XL M+S
2.6 / 38
2.8 / 41
3.1 / 45
245/50 R 19 105 3.1 / 45
H XL A/S
245/50 R 19 105 2.9 / 42
W XL
245/50 R 19 105
V XL M+S
245/50 R 19 105
V XL M+S
Front: 245/45 R 2.5 / 36
20 103 Y XL
-
Front: 245/45 R 2.5 / 36
20 103 Y XL
-
Rear: 275/40 R
20 106 Y XL
-
2.7 / 39
Rear: 275/40 R
20 106 Y XL
-
2.7 / 39
Front: 245/45 R 3.0 / 44
20 103 W XL
-
Front: 245/45 R 2.8 / 41
20 103 W XL
-
Rear: 275/40 R
20 106 W XL
-
3.2 / 46
Rear: 275/40 R
20 106 W XL
-
3.0 / 44
Front: 245/40 R 2.8 / 41
21 100 Y XL
-
Front: 245/40 R 2.7 / 39
21 100 Y XL
-
Rear: 275/35 R
21 103 Y XL
-
3.0 / 44
-
Rear: 275/35 R
21 103 Y XL
-
2.9 / 42
-
Front: 245/45 R 2.8 / 41
20 103 V XL
M+S
Front: 245/45 R 2.8 / 41
20 103 V XL
M+S
Rear: 275/40 R
20 106 V XL
M+S
-
3.0 / 44
Rear: 275/40 R
20 106 V XL
M+S
-
3.0 / 44
Emergency
wheel:
Speed up to a max. of
50 mph / 80 km/h
Emergency
wheel:
Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18
104 M
4.2 / 60
T 135/80 R 18
104 M
4.2 / 60
With high-speed tuning feature
X4 M40i
Without high-speed tuning feature
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Wheels and tires
MOBILITY
245: nominal width in mm
Tire size
Pressure specifications in
bar/PSI
45: cross-sectional relationship in %
R: radial tire code
Specifications
in bar/PSI with
cold tires
18: rim diameter in inches
96: load index
Y: speed code letter
ZR tires: reinforced radial tire for speeds ex-
ceeding 150 mph/240 km/h
245/50 R 19
105 V XL M+S
2.9 / 42
3.1 / 45
3.1 / 45
245/50 R 19
105 W XL
3.3 / 48
Maximum tire load
Maximum tire load is the maximum permissi-
ble weight for which the tire is approved.
Front: 245/45 R 2.5 / 36
20 103 Y XL
-
Locate the maximum tire load on the tire
sidewall and the Gross Axle Weight Rating –
GAWR – on the certification label on the driver
door B-pillar. Divide the tire load by 1.1. It must
be greater than one-half of the vehicle’s Gross
Axle Weight Rating – GAWR. Note, front vs.
rear GAWR and tire loads, respectively.
Rear: 275/40 R
20 106 Y XL
-
2.7 / 39
Front: 245/45 R 3.0 / 44
20 103 W XL
-
Rear: 275/40 R
20 106 W XL
-
3.2 / 46
Speed letter
Front: 245/40 R 2.8 / 41
21 100 Y XL
-
Designation Maximum speed
Rear: 275/35 R
21 103 Y XL
-
3.0 / 44
-
Q
R
up to 100 mph/160 km/h
up to 106 mph/170 km/h
up to 112 mph/180 km/h
up to 118 mph/190 km/h
up to 131 mph/210 km/h
up to 150 mph/240 km/h
up to 167 mph/270 km/h
up to 186 mph/300 km/h
above 186 mph/300 km/h
Front: 245/45 R 2.8 / 41
20 103 V XL
M+S
S
T
Rear: 275/40 R
20 106 V XL
M+S
-
3.0 / 44
H
V
Emergency
wheel:
Speed up to a max. of
50 mph / 80 km/h
W
Y
T 135/80 R 18
104 M
4.2 / 60
(Y)
Tire Identification Number
DOT code: DOT xxxx xxx 1924
Tire marking
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
Tire size
245/45 R 18 96 Y
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Wheels and tires
MOBILITY
1924: tire age
norm due to variations in driving habits, service
practices and differences in road characteris-
tics and climate.
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
Traction
Tire age
The traction grades, from highest to lowest,
are AA, A, B, and C.
Recommendation
Those grades represent the tire's ability to
stop on wet pavement as measured under
controlled conditions on specified government
test surfaces of asphalt and concrete. A tire
marked C may have poor traction perform-
ance.
Regardless of the tire tread depth, replace tires
at least every 6 years.
Manufacture date
You can find the manufacture date of the tire
on the tire sidewall.
The traction grade assigned to this tire is
based on straight-ahead braking traction tests,
and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
Designation
Manufacture date
DOT … 1924
19th week of 2024
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width.
Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a level of performance which all passenger
car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades Band
A represent higher levels of performance on
the laboratory test wheel than the minimum
required by law.
E.g.: Treadwear 200; Traction AA; Tempera-
ture A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
All passenger vehicle tires must conform to
Federal Safety Requirements in addition to
these grades.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. E.g., a tire graded 150
would wear one and one-half, 1 g, times as
well on the government course as a tire graded
100. The relative performance of tires depends
upon the actual conditions of their use, how-
ever, and may depart significantly from the
Warning
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately
or in combination, can cause heat buildup
and possible tire failure. There is a risk of
accident, injury, and property damage.
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The positions of the wear indicators are
marked on the tire sidewall with TWI, Tread
Wear Indicator.
Runflat tires
Runflat tires, refer to page 332, are labeled
with a circular icon containing the letters RSC
marked on the tire sidewall.
Tire damage
M+S
Winter tires, as well as all-season tires with
better winter performance than summer tires,
can be identified by the M+S marking on the
tire side wall.
General information
Check your tires regularly for damage, foreign
objects lodged in the tread, and tread wear.
Indications of tire damage or other vehicle mal-
functions:
Tire tread
Safety information
Warning
▷
▷
▷
Unusual vibrations.
Unusual tire or running noises.
Unusual vehicle handling such as a strong
tendency to pull to the left or right.
▷
Uneven wear pattern, e.g., increased wear
in the area of the tire shoulder.
If the tire tread depth is too low, driving
safety may be impaired in critical situations
such as aquaplaning or slush on the road.
There is a risk of accident, injury, and prop-
erty damage. The tire tread depth may not
fall below 0.12 in/3 mm for summer tires and
0.16 in/4 mm for winter and all-season tires,
or observe the statutory regulations on mini-
mum tread depth.
Damage can be caused by the following situa-
tions, for instance:
▷
▷
▷
▷
▷
Driving over curbs.
Road damage.
Tire pressure too low.
Vehicle overloading.
Incorrect tire storage.
Safety information
Minimum tread depth
Warning
Damaged tires can lose tire inflation pres-
sure, which can lead to loss of vehicle con-
trol. There is a risk of accident, injury, and
property damage. If tire damage is suspected
while driving, immediately reduce speed and
stop. Have wheels and tires checked. To do
so, drive carefully to an authorized service
center or another qualified service center or
repair shop. Have the vehicle towed or trans-
ported as needed. Do not repair damaged
tires, but have them replaced.
Distributed over the tire circumference are
the tire manufacturer’s wear indicators with a
height of at least 0.06 in/1.6 mm, which serve
as an indicator of tire tread wear.
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Warning
Safety information
The wheels, tires and chassis components
can become damaged when driving over
curbs, road damage, or other obstacles.
Larger wheels have a smaller tire cross-sec-
tion. The smaller the tire cross-section, the
higher the risk of tire damage. There is a risk
of accident, injury, and property damage. If
possible, avoid driving over curbs, road dam-
age or other obstacles, or drive over them
slowly and carefully.
Warning
Wheels and tires that are not suitable for
the vehicle can damage parts of the vehicle.
There is a risk of accident, injury, and prop-
erty damage. The vehicle manufacturer rec-
ommends that you use only wheels and tires
that have been recommended for the vehicle
type.
Warning
Mounted steel wheels can cause technical
problems, for instance unexpected loosening
of the lug bolts and damage to the brake
disks. There is a risk of accident, injury,
and property damage. Do not mount steel
wheels.
Exchanging wheels and
tires
Mounting and wheel balancing
Have the wheel mounted and balanced by an
authorized service center or another qualified
service center or repair shop.
Warning
Wheel/tire combinations that are not suitable
for the vehicle can affect vehicle handling
and a number of system functions, e.g.,the
Antilock Braking System or Dynamic Stability
Control. There is a risk of accident, injury, and
property damage. The manufacturer of the
vehicle recommends that you use wheels and
tires that have been recommended by the
vehicle manufacturer for the vehicle type. Fol-
lowing tire damage, have the original wheel/
tire combination remounted on the vehicle as
soon as possible.
Suitable wheels and tires
General information
Only certain wheel/tire combinations are suit-
able depending on vehicle and equipment.
The vehicle manufacturer determines wheel/
tire combinations on the basis of the following
criteria:
▷
▷
Tire size, e.g., tire width, aspect ratio.
Wheel size, e.g., rim diameter, offset.
For more information on wheel/tire combina-
tions and special equipment, contact an au-
thorized service center or another qualified
service center or repair shop.
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Recommended tire brands
Maximum speed
Safety information
Warning
If the maximum permissible speed of your
mounted tires is exceeded, the tires may be
damaged. There is a risk of accident, injury,
and property damage. Do not exceed the
maximum permissible speed of the tires.
Tire types are developed for each vehicle and
optimized specifically for the individual require-
ments of that vehicle, e.g.:
Maximum speed of winter tires
If the maximum speed of the vehicle is higher
than the permissible speed of the winter tires,
the maximum permissible speed must be indi-
cated with a sign placed in the field of vision.
The info label is available from an authorized
service center or another qualified service cen-
ter or repair shop.
▷
▷
▷
Vehicle handling.
Comfort.
Noise characteristics.
Specially developed tires are marked with
a star on the tire sidewall. After replacing
wheels and tires, the vehicle manufacturer rec-
ommends using star-marked tires again. The
vehicle manufacturer recommends that you
use tires of the same make and tread design.
Winter tires
General information
New tires
Tire traction is not optimal due to manufactur-
ing circumstances when tires are brand new.
Drive conservatively for the first
200 miles/300 km.
Retreaded tires
Warning
Winter tires are recommended for operating on
winter roads.
Retreated tires can have different tire casing
structures. With advanced age the service life
can be limited. There is a risk of accident,
injury, and property damage. The manufac-
turer of the vehicle does not recommend the
use of retreaded tires.
Winter tires can be identified by the icon with
mountain and snowflake, as well as the M+S
marking on the tire sidewall.
All-season tires with the M+S designation, but
without icon with mountain and snowflake,
have better winter characteristics than summer
tires but generally do not achieve the perform-
ance of winter tires.
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Safety information
Storing tires
Tire pressure
Warning
Do not exceed the maximum tire inflation pres-
sure indicated on the tire sidewall.
If the vehicle is equipped with an M Sport
differential and all-weather tires on 19 inch
rims, this can alter handling, for instance the
vehicle may skid. There is a risk of accidents
and risk of property damage. If the vehicle is
equipped with an M Sport differential, do not
mount all-weather tires on 19 inch rims.
Storage
▷
Store wheels and tires in a cool, dry and
dark place.
▷
Always protect tires against all contact with
oil, grease, and solvents.
▷
▷
Do not leave tires in plastic bags.
Remove dirt from wheels or tires.
Changing runflat tires
When changing from runflat tires to standard
tires, it must be ensured that the vehicle con-
tains an emergency wheel or tire mobility kit.
For more information, contact an authorized
service center or another qualified service cen-
ter or repair shop.
Runflat tires
Principle
Runflat tires permit continued driving under
limited conditions even in the event of a com-
plete tire pressure loss.
Wheel change between axles
Warning
General information
The wheels consist of tires that are self-sup-
porting to a limited degree and may also in-
clude special rims.
A wheel change between the axles on vehi-
cles with different tire sizes or rim sizes on
the front and rear axles can cause damage
to the tires and the vehicle. There is a risk
of accident, injury, and property damage. Do
not rotate the tires between the axles on ve-
hicles with different tire sizes or rim sizes on
the front and rear axles.
The reinforcement of the sidewall allows the
tire to remain drivable to a limited degree in
the event of a tire pressure loss.
Follow the instructions for continued driving
with a flat tire.
Different abrasion patterns can occur on the
front and rear axles depending on individual
driving conditions. The tires can be rotated in
pairs between the axles to achieve even abra-
sion. For more information, contact an author-
ized service center or another qualified service
center or repair shop. After changing, check
the tire pressure and correct, if needed.
Safety information
Warning
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, and property dam-
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age. Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
▷
▷
Have all vehicle occupants get out and
make sure that they remain outside the
hazardous area such as behind a guardrail.
If necessary, set up a warning triangle at an
appropriate distance.
Warning
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire compo-
nents may come loose. There is a risk of ac-
cident, injury, and property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
Tire repair set
Principle
The tire repair set is used to temporarily seal
minor tire damage so that it is possible to con-
tinue driving.
Identification
General information
▷
The filled in tire sealant closes the damage
from the inside when it hardens.
▷
Follow the instructions for using the tire
repair set, which are provided on the com-
pressor and sealant bottle.
▷
▷
The tire repair set may be insufficient if the
tire damage measures more than approx.
0.16 in/4 mm.
Do not remove foreign objects that have
penetrated the tire. Remove foreign objects
only when they are visibly protruding from
the tire.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the tire
sidewall.
▷
The compressor can be used to check the
tire inflation pressure.
Repairing a flat tire
Overview
Safety precautions
▷
Park the vehicle as far away as possible
from passing traffic and on solid ground.
Storage
Depending on vehicle equipment, the tire re-
pair set is stored as follows:
▷
▷
Turn on the hazard warning system.
Secure the vehicle against rolling away by
setting the parking brake.
▷
In the cargo area under the cargo area
floor.
▷
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
▷
▷
In the cargo area on the left or right side.
In the cargo area behind a side trim panel.
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Wheels and tires
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▷
▷
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
Sealant bottle and filler hose
As soon as permitted by the traffic flow,
have all vehicle occupants get out and
make sure that they remain outside the
hazardous area such as behind a guardrail.
▷
▷
If necessary, set up the hazard triangle or
hazard warning lights at an appropriate
distance.
Remove the warning label for the maximum
permissible speed from the sealant bottle
and attach it in the visible area in the vehi-
cle interior.
1
Sealant bottle
2
3
4
5
Sealant bottle outlet
Filler hose
Sealant bottle connection
Wheel valve connection
Preparing the tire repair set
1. Insert the sealant bottle into the mount on
the housing of the compressor.
Compressor
2. Turn the sealant bottle clockwise by 90° to
the stop.
1
Compressor
2
3
4
5
6
Tire pressure display
Sealant bottle mount
Pressure reducing valve button
Connector for socket
Power switch
Safety precautions
▷
Park the vehicle as far away as possible
from passing traffic and on solid ground.
▷
▷
Turn on the hazard warning system.
Set the parking brake.
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MOBILITY
3. Connect the filler hose to the outlet of the
sealant bottle and turn clockwise by 90° to
the stop.
NOTICE
The compressor can overheat during ex-
tended operation. There is a risk of property
damage. Do not run the compressor for more
than 10 minutes.
Filling the tire with sealing compound
1. With standby state or drive-ready state
switched on, switch on the compressor.
Let the compressor run for max. 10 minutes
to fill in the tire sealant and reach a tire
pressure of 2.5 bar/36 psi.
4. Unscrew the valve cap from the wheel and
screw the connecting piece of the filler hose
onto the valve.
While the tire is being filled with tire sealant,
the tire pressure can briefly reach approx.
6 bar/87 psi. Do not turn off the compres-
sor in this phase.
2. Switch off the compressor.
Checking the tire pressure
Read the tire pressure on the tire pressure dis-
play of the compressor. The tire pressure must
be at least 2.5 bar/36 psi.
5. With the compressor switched off, insert the
connector into the power socket in the vehi-
cle interior.
Tire pressure too high
If the tire pressure is too high, reduce the tire
pressure with the pressure reducing valve on
the compressor.
Filling the tire with sealing
compound
Minimum tire inflation pressure is not
reached
Safety information
Do not continue driving unless a minimum tire
pressure of 2.5 bar/36 psi is reached. Contact
an authorized service center or another quali-
fied service center or repair shop.
DANGER
If the exhaust pipe is blocked or ventilation is
insufficient, harmful exhaust gases can pene-
trate the vehicle. The exhaust gases contain
pollutants which are colorless and odorless.
In enclosed areas, exhaust gases can also
accumulate outside of the vehicle. There is a
danger to life. Keep the exhaust pipe free and
ensure sufficient ventilation.
Minimum tire inflation pressure is
reached
1. Pull the connector out of the socket in the
vehicle interior.
2. Disconnect the hose from the sealant bottle
and the valve on the wheel.
335
Wheels and tires
MOBILITY
3. Unscrew the valve cap.
compressor and let it run for a maxi-
mum of 10 minutes.
4. Stow the tire repair set in the cargo area.
▷
Reduce tire pressure: press the pressure
reducing valve button on the compres-
sor.
5. Immediately drive 6 miles/10 km to ensure
that the tire sealant is evenly distributed in
the tire.
Do not exceed the permissible maximum
speed of 50 mph/80 km/h.
Removing and stowing the tire
repair set
1. Switch off the compressor.
If possible, do not drive at speeds less than
12 mph/20 km/h.
2. Pull the connector out of the socket in the
vehicle interior.
Tire sealant may spray from the damaged
area during the initial wheel rotations.
3. Disconnect the hose from the compressor
and the valve on the wheel.
Adjusting the tire pressure
1. Stop at a suitable location.
4. Unscrew the valve cap.
5. Stow the tire repair set together with the
hose in the cargo area.
2. Connect the hose directly to the compres-
sor and turn clockwise by 90° until it audi-
bly engages.
Continuing the trip
Re-initialize the flat tire monitor or reset the
Tire Pressure Monitor.
3. Unscrew the valve cap from the wheel and
screw the connecting piece of the hose
onto the valve.
Do not exceed the permissible maximum
speed of 50 mph/80 km/h.
Do not exceed a maximum distance traveled of
125 miles/200 km.
Replace the faulty tire and the sealant bottle
from the tire repair set as soon as possible.
Additional information:
▷
▷
Flat tire monitor, refer to page 345.
Tire pressure monitor, refer to page 338.
4. Insert the connector into the socket in the
vehicle interior.
System limits
If the tire cannot be made drivable, contact an
authorized service center or another qualified
service center or repair shop.
5. Read the tire pressure on the tire pressure
display of the compressor.
Do not continue driving unless a minimum
tire pressure of 1.3 bar/19 psi is displayed.
Contact an authorized service center or an-
other qualified service center or repair shop.
With the Tire Pressure Monitor: using sealant
can damage the wheel electronics. In this case,
have the electronics checked and replaced at
the next opportunity.
6. Correct the tire pressure to 2.5 bar/36 psi.
▷
Increase tire pressure: with standby or
drive-ready state turned on, turn on the
336
Wheels and tires
MOBILITY
Hubcap
Snow chains
Safety information
Warning
Mounting snow chains on unsuitable tires
can cause the snow chains to come into
contact with vehicle parts. There is a risk of
accident, injury, and property damage. Only
fit snow chains on tires recommended by
the vehicle manufacturer for use with snow
chains.
Remove hubcaps before using snow chains.
For mounting, align the hubcap with the
groove to the tire valve and press on all the
way around until it is snapped into place.
Warning
Use
Insufficiently tight snow chains may damage
tires and vehicle components. There is a
risk of accident, injury, and property damage.
Make sure that the snow chains are always
sufficiently tight. Re-tighten as needed ac-
cording to the snow chain manufacturer's in-
structions.
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷
▷
225/60 R 18.
245/50 R 19.
Information on the wheel size and rim offset is
located on the inside of the wheel.
The list can also include wheel/tire sizes that
are only suitable for certain models.
Fine-link snow chains
Information on wheels and tires approved for
the vehicle can be requested from an author-
ized service center or another qualified service
center or repair shop.
The manufacturer of the vehicle recommends
the use of fine-link snow chains. Certain types
of fine-link snow chains have been tested by
the manufacturer of the vehicle and recom-
mended as road-safe.
Follow the snow chain manufacturer's instruc-
tions.
For information on suitable snow chains, con-
tact an authorized service center or another
qualified service center or repair shop.
Do not initialize the flat tire monitor after
mounting snow chains, as doing so may result
in incorrect readings.
Do not reset the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
When driving with snow chains, activate the
Dynamic Traction Control briefly to optimize
the drive power.
337
Wheels and tires
MOBILITY
Make sure that the sizes of your mounted
tires are displayed correctly and match the
information on the tires and the tire inflation
pressure specifications on the vehicle.
Maximum speed with snow chains
Do not exceed a speed of 30 mph/50 km/h
when using snow chains.
Tire pressure monitor
Functional requirements
The following prerequisites must be met for
the system; otherwise, reliable notification of a
tire pressure loss is not assured:
Principle
The Tire Pressure Monitor monitors the tire
pressure and issues a warning if the tire pres-
sure has dropped.
▷
Every time a tire or wheel is changed, the
correct details on the mounted tires must
be entered in the tire settings.
General information
Sensors in the tire valves measure the tire in-
flation pressure and tire temperature.
▷
The Tire Pressure Monitor does not acti-
vate until after driving for a few minutes:
▷
▷
After a tire or wheel change.
Depending on the tires detected or registered,
the system displays the specified nominal
pressures on the control display and compares
them with the current tire pressures.
After a reset, for tires with special ap-
proval.
▷
After changing the tire setting.
▷
▷
For tires with special approval:
If tires are being used that are not specified
in the tire inflation pressure details on the ve-
hicle such as tires with special approval, the
system needs to be actively reset. The system
will then take over the actual tire inflation pres-
sures as the target pressures.
▷
After a tire or wheel change, a reset was
performed with the correct tire inflation
pressure.
▷
After the tire inflation pressure was ad-
justed to a new value, a reset was per-
formed.
When operating the system, also note the in-
formation found in the Tire inflation pressure
chapter.
Wheels with wheel electronics.
Additional information:
Tire settings
Tire inflation pressure, refer to page 322.
General information
The tire sizes of the mounted tires can be
gathered from the tire inflation pressure details
on the vehicle or directly on the tires.
Safety information
Warning
The tire details do not need to be re-entered
when the tire pressure is corrected.
The display of the target pressures is not
a substitute for the tire inflation pressure de-
tails on the vehicle. Incorrect entries in the
tire settings can lead to incorrect target tire
inflation pressure values. In this case, it can-
not be guaranteed that the notification of a
tire pressure loss will be reliable. There is a
risk of injury and risk of property damage.
For summer and winter tires, the tire details
entered last are stored. After a tire or wheel
change, the settings of the tire sets used last
can be selected.
338
Wheels and tires
MOBILITY
Changing settings
1. "CAR"
Current tire temperature
Depending on the model, the current tire tem-
peratures are displayed.
2. "Vehicle status"
The current tire temperatures may change
while driving or due to the outside tempera-
ture.
3.
"Tire Pressure Monitor"
4. "Tire settings"
5. "Tire selection"
6. "Manual"
7. "Tire type"
Nominal pressure
The nominal pressure for the tires on the front
and rear axles is displayed.
8. Select the tire type that is mounted on the
rear axle.
The specified nominal pressures take the in-
fluence of driving and outside temperature on
the tire temperature into account. The appro-
priate nominal pressure is always displayed,
independent of the weather situation, tire tem-
peratures and travel times.
For tires with special approval:
"Other tires"
Observe further proceeding in the perform
a reset section.
9. Select the maximum road speed that will be
used with the tires.
The displayed nominal pressure may change
and may differ from the tire inflation pressure
details on the door pillar of the driver's door.
The tire inflation pressure can thus be cor-
rected to the value of the displayed target
pressures.
10. "Save tire settings"
The measurement of the current tire inflation
pressure is started. The measurement prog-
ress is displayed.
The nominal pressure is immediately adjusted
if the vehicle load state is changed in the tire
settings.
Status display
Current status
The system status can be displayed on the
control display, e.g., whether or not the system
is active.
Tire conditions
General information
Tire and system status are indicated by the
color of the wheels and a text message on the
control display.
1. "CAR"
2. "Vehicle status"
3.
"Tire Pressure Monitor"
Any existing messages may not be deleted if
the nominal pressure is not reached after the
tire inflation pressure is corrected.
The current status is displayed.
Current tire pressure
The current tire pressure is displayed for each
tire.
All wheels green
▷
The system is active and bases warnings
on the target pressures.
The current tire inflation pressures may
change while driving or depending on the out-
side temperature.
▷
For tires with special approval: the system
is active and bases warnings on the tire
inflation pressures stored during the last re-
set.
339
Wheels and tires
MOBILITY
One to four yellow wheels
A flat tire or major tire pressure loss has occur-
red in the indicated tires.
Messages: for tires without special
approval
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control may be turned on.
Gray wheels
It may not be possible to identify tire pressure
losses.
Safety information
Possible causes:
▷
▷
Malfunction.
Warning
During tire inflation pressure measurement,
after confirmation of the tire settings.
A damaged regular tire with low or no tire
inflation pressure impacts handling such as
steering and braking response. Runflat tires
can maintain limited stability. There is a risk
of accident, injury, and property damage. Do
not continue driving if the vehicle is equipped
with normal tires. Follow the information on
runflat tires and continued driving with these
tires.
▷
For tires with special approval: a reset is
performed for the system.
For tires with special approval:
performing a reset
1. "CAR"
2. "Vehicle status"
3. "Tire Pressure Monitor"
4. Make sure that correct tire settings have
been made.
If a tire inflation pressure check is
required
Tire settings, refer to page 338.
Message
5. Turn on drive-ready state and do not drive
off.
An icon with a Check Control message appears
on the control display.
6. Reset tire pressure: "Perform reset".
7. Drive off.
Icon
Possible cause
The wheels are displayed in gray and the fol-
lowing is displayed: "Resetting tire pressure…".
Leak detected on the tire.
Inflation was not carried out accord-
ing to specifications, for instance
when the tire has not been suffi-
ciently inflated or in the case of a nat-
ural steady tire pressure loss.
After a travel time of several minutes, the set
tire inflation pressures are accepted as the
predefined tire inflation pressures. The reset is
completed automatically while driving.
After a successfully completed reset, the
wheels on the control display are shown in
green and the following is displayed: "Reset
successful."
Measure
Check the tire pressure and correct as needed.
You may interrupt this trip at any time. When
you continue driving the reset resumes auto-
matically.
340
Wheels and tires
MOBILITY
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the
tire sidewall.
If the tire inflation pressure is too low
Message
Runflat tires, refer to page 332.
A yellow warning light is illuminated in
the instrument cluster.
3. Read the description on what to do in case
of a flat tire.
In addition, an icon with a Check Control mes-
sage appears on the control display.
Actions in the event of a flat tire, refer to
page 342.
Icon
Possible cause
Messages: for tires with special
approval
There is a tire pressure loss.
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control may be turned on.
Measure
1. Reduce the vehicle speed. Do not exceed a
speed of 80 mph/130 km/h.
Safety information
2. At the next opportunity, for instance at a fill-
ing station, check the tire inflation pressure
in all four tires and correct if necessary.
Warning
A damaged regular tire with low or no tire
inflation pressure impacts handling such as
steering and braking response. Runflat tires
can maintain limited stability. There is a risk
of accident, injury, and property damage. Do
not continue driving if the vehicle is equipped
with normal tires. Follow the information on
runflat tires and continued driving with these
tires.
If there is a significant tire pressure
loss
Message
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon with the affected tire ap-
pears in a Check Control message on the con-
trol display.
If a tire inflation pressure check is
required
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Message
An icon with a Check Control message appears
on the control display.
Measure
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
2. Check whether the vehicle is fitted with
standard tires or runflat tires.
341
Wheels and tires
MOBILITY
If there is a significant tire pressure
loss
Icon
Possible cause
Inflation was not carried out accord-
ing to specifications, e.g., the tire has
not been sufficiently inflated.
Message
A yellow warning light is illuminated in
the instrument cluster.
The system has detected a wheel
change, but no reset was done.
The tire inflation pressure has fallen
below the level of the last reset.
In addition, an icon with the affected tire ap-
pears in a Check Control message on the con-
trol display.
No reset was performed for the sys-
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Measure
No reset was performed for the sys-
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
1. Check the tire pressure and correct as
needed.
2. Perform a system reset.
If the tire inflation pressure is too low
Message
Measure
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
A yellow warning light is illuminated in
the instrument cluster.
2. Check whether the vehicle is fitted with
standard tires or runflat tires.
In addition, an icon with a Check Control mes-
sage appears on the control display.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the
tire sidewall.
Icon
Possible cause
Runflat tires, refer to page 332.
There is a tire pressure loss.
3. Read the description on what to do in case
of a flat tire.
No reset was performed for the sys-
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Actions in the event of a flat tire, refer to
page 342.
Actions in the event of a flat tire
Measure
1. Reduce the vehicle speed. Do not exceed a
speed of 80 mph/130 km/h.
Standard tires
1. Identify the damaged tire.
2. At the next opportunity, for instance at a fill-
ing station, check the tire inflation pressure
in all four tires and correct if necessary.
Check the tire pressure in all four tires,
for instance using the tire pressure display
of a flat tire kit.
3. Reset the system.
342
Wheels and tires
MOBILITY
For tires with special approval: when the
tire pressure in all four tires is correct, the
Tire Pressure Monitor may not have been
reset. In this case, perform the reset.
Continued driving with a flat tire
Follow the following when continuing to drive
with a damaged tire:
1. Avoid sudden braking and steering maneu-
vers.
If no tire damage can be identified, con-
tact an authorized service center or another
qualified service center or repair shop.
2. Do not exceed a speed of
50 mph/80 km/h.
2. Repair the flat tire, e.g., with a flat tire kit or
by changing the wheel.
3. Check the tire inflation pressure in all four
tires at the next opportunity.
Use of sealing compound, for instance from
the flat tire kit, may damage the wheel elec-
tronics. Have the electronics replaced at the
next opportunity.
Possible distance traveled with a
depressurized tire
The possible distance traveled varies depend-
ing on how the vehicle is loaded and used, e.g.,
speed, road conditions, outside temperature.
The distance traveled may be less but may
also be more if an economical driving style is
used.
Runflat tires
Safety information
Warning
If the vehicle is loaded with an average
weight and used under favorable conditions,
the possible distance traveled may be up to
50 miles/80 km.
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, and property dam-
age. Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
Vehicle handling with damaged tires
Vehicles driven with a damaged tire will han-
dle differently, potentially leading to conditions
such as the following:
▷
▷
▷
Greater likelihood of skidding of the vehicle.
Longer braking distances.
Warning
Changed self-steering properties.
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire compo-
nents may come loose. There is a risk of ac-
cident, injury, and property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
Modify your driving style. Avoid abrupt steering
or driving over obstacles, for instance curbs or
potholes.
System limits
Temperature
The tire inflation pressure depends on the
tire's temperature.
Maximum speed
You may continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
Driving or exposure to the sun will increase the
tire temperature, thus increasing the tire infla-
tion pressure.
343
Wheels and tires
MOBILITY
The tire inflation pressure is reduced when the
tire temperature falls again.
ice center or another qualified service cen-
ter or repair shop.
These circumstances may cause a warning
when temperatures fall very sharply.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
System
Following a temperature-related warning, the
target pressures are displayed on the control
display again after a short distance.
Each tire, including the spare (if provided)
should be checked monthly when cold and in-
flated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If the
vehicle has tires of a different size than the
size indicated on the vehicle placard or tire
inflation pressure label, you should determine
the proper tire inflation pressure for those
tires.) As an added safety feature, the vehi-
cle has been equipped with a tire pressure
monitoring system (TPMS) that illuminates a
low tire pressure telltale when one or more
of your tires is significantly under-inflated. Ac-
cordingly, when the low tire pressure telltale
illuminates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stopping
ability. Please note that the TPMS is not a
substitute for proper tire maintenance, and it
is the driver's responsibility to maintain correct
tire pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale. The vehicle
has also been equipped with a TPMS malfunc-
tion indicator to indicate when the system is
not operating properly. The TPMS malfunction
indicator is combined with the low tire pres-
sure telltale. When the system detects a mal-
function, the telltale will flash for approximately
one minute and then remain continuously il-
luminated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction indi-
cator is illuminated, the system may not be
able to detect or signal low tire pressure as
Sudden tire pressure loss
The system cannot indicate sudden serious
tire damage caused by external circumstances.
Failure performing a reset
Tires with special approval: the system will not
function correctly if a reset was not performed,
for example a flat tire may be indicated al-
though the tire inflation pressures are correct.
Malfunction
Message
The yellow warning light flashes and is
then illuminated continuously. A Check
Control message is displayed. It may
not be possible to identify tire pressure losses.
Measure
▷
▷
▷
A wheel without wheel electronics is
mounted: have the wheels checked, if
needed.
A wheel without wheel electronics such as
an emergency wheel is mounted: have the
wheels checked, if needed.
Fault caused by systems or devices with
the same radio frequency: after leaving the
area of the interference, the system auto-
matically becomes active again.
▷
▷
For tires with special approval: the system
was unable to complete the reset. Perform
a system reset again.
Tire Pressure Monitor malfunction: have
the vehicle checked by an authorized serv-
344
Wheels and tires
MOBILITY
intended. TPMS malfunctions may occur for a
variety of reasons, including the installation of
replacement or alternate tires or wheels on the
vehicle that prevent the TPMS from function-
ing properly. Always check the TPMS malfunc-
tion telltale after replacing one or more tires
or wheels on the vehicle to ensure that the re-
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Status display
The current status of the flat tire monitor can
be displayed, e.g., whether the flat tire monitor
is active.
1. "CAR"
2. "Vehicle status"
3.
"Flat Tire Monitor"
The status is displayed.
Flat tire monitor
Initialization required
An initialization must be performed in the fol-
lowing situations:
Principle
The flat tire monitor detects a tire pressure
loss while driving and issues a warning if the
tire pressure has dropped.
▷
After the tire inflation pressure has been
adjusted.
▷
After a tire or wheel change.
General information
Performing initialization
The system detects tire pressure loss on the
basis of rotation speed differences between
the individual wheels while driving.
When initializing, the set tire inflation pressures
serve as reference values in order to detect a
flat tire. Initialization is started by confirming
the tire inflation pressures.
In the event of a tire pressure loss, the diam-
eter and therefore the rate of rotation of the
corresponding wheel changes. The difference
will be detected and reported as a flat tire.
Do not initialize the system when driving with
snow chains.
1. "CAR"
The system does not measure the actual infla-
tion pressure in the tires.
2. "Vehicle status"
3. "Flat Tire Monitor"
Functional requirements
The following prerequisites must be met for
the system; otherwise, reliable notification of a
tire pressure loss is not assured:
4. Turn on drive-ready state and do not drive
off.
5. Start the initialization with: "Perform reset"
6. Drive off.
▷
After a tire or wheel change, an initialization
was performed with the correct tire inflation
pressure.
The initialization is completed while driving,
which can be interrupted at any time.
The initialization automatically continues when
driving continues.
▷
After the tire pressure was adjusted to a
new value, an initialization was performed.
Messages
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control (DSC) is turned on, if needed.
345
Wheels and tires
MOBILITY
To do this, check the tire pressure in all four
tires, for instance using the tire pressure
display of a flat tire kit.
Safety information
Warning
When the tire inflation pressure in all four
tires is correct, the flat tire monitor may not
have been initialized. In this case, initialize
the system.
A damaged regular tire with low or no tire
inflation pressure impacts handling such as
steering and braking response. Runflat tires
can maintain limited stability. There is a risk
of accident, injury, and property damage. Do
not continue driving if the vehicle is equipped
with normal tires. Follow the information on
runflat tires and continued driving with these
tires.
If tire damage cannot be identified, contact
an authorized service center or another
qualified service center or repair shop.
2. Repair the flat tire, e.g., with a flat tire kit or
by changing the wheel.
Runflat tires
Indication of a flat tire
Safety information
A yellow warning light is illuminated in
the instrument cluster.
Warning
In addition, an icon with a Check Control mes-
sage appears on the control display.
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, and property dam-
age. Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Measure
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
Warning
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire compo-
nents may come loose. There is a risk of ac-
cident, injury, and property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
2. Check whether the vehicle is fitted with
standard tires or runflat tires.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the
tire sidewall.
Runflat tires, refer to page 332.
Actions in the event of a flat tire
Maximum speed
You may continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
Standard tires
1. Identify the damaged tire.
346
Wheels and tires
MOBILITY
Continued driving with a flat tire
▷
▷
A natural, even tire pressure loss in all
four tires will not be recognized. Therefore,
check the tire inflation pressure regularly.
Follow the following when continuing to drive
with a damaged tire:
Sudden serious tire damage caused by ex-
ternal circumstances cannot be recognized
in advance.
1. Avoid sudden braking and steering maneu-
vers.
2. Do not exceed a speed of
50 mph/80 km/h.
▷
▷
▷
The system has not been initialized.
When driving on a snowy or slippery road.
3. Check the tire inflation pressure in all four
tires at the next opportunity.
Sporty driving style: slip on traction wheels,
high lateral acceleration (drifting).
When the tire inflation pressure in all four
tires is correct, the flat tire monitor may not
have been initialized. In this case, initialize
the system.
▷
When driving with snow chains.
Changing wheels/tires
Possible distance traveled with a
depressurized tire
General information
The possible distance traveled varies depend-
ing on how the vehicle is loaded and used, e.g.,
speed, road conditions, outside temperature.
The distance traveled may be less but may
also be more if an economical driving style is
used.
When using runflat tires or a flat tire kit, a
wheel does not always need to be changed
immediately in case of a breakdown when
there is a tire pressure loss due to a flat tire.
If necessary, a suitable wheel change tool, e.g.,
a jack, is available as an accessory from an
authorized service center or another qualified
service center or repair shop.
If the vehicle is loaded with an average
weight and used under favorable conditions,
the possible distance traveled may be up to
50 miles/80 km.
Safety information
Vehicle handling with damaged tires
Warning
Vehicles driven with a damaged tire will han-
dle differently, potentially leading to conditions
such as the following:
The jack is only provided for short-term lifting
of the vehicle for wheel changes. Even if all
safety precautions are observed, there is a
risk of the raised vehicle falling if the jack tips
over. There is a risk of injury or danger to life.
When the vehicle is raised with the jack, do
not lie under the vehicle and do not switch on
the drive-ready state.
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▷
▷
Greater likelihood of skidding of the vehicle.
Longer braking distances.
Changed self-steering properties.
Modify your driving style. Avoid abrupt steering
or driving over obstacles, for instance curbs or
potholes.
System limits
The system could be delayed or malfunction in
the following situations:
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Wheels and tires
MOBILITY
Warning
and risk of property damage. When cranking
up the jack, ensure that it is inserted in the
jacking point next to the wheel well.
Placing supports, e.g., wooden blocks or sim-
ilar, under the jack may reduce its ability to
bear weight because of the limited height.
The load-carrying capacity of the wooden
blocks may be exceeded and the vehicle may
tip over. There is a risk of injury or danger to
life. Do not place supports under the jack.
Warning
A vehicle that is raised on a jack may fall
off of the jack if lateral forces are exerted
on it. There is a risk of injury and risk of
property damage. While the vehicle is raised,
do not exert lateral effort on the vehicle or
pull abruptly on the vehicle. Have a stuck
wheel removed by an authorized service cen-
ter or another qualified service center or re-
pair shop.
Warning
The jack, issued by the vehicle manufacturer,
is provided in order to perform a wheel
change in the event of a breakdown. The
jack is not designed for frequent use, e.g.,
changing from summer to winter tires. Using
the jack frequently may cause it to become
jammed or damaged. There is a risk of injury
and risk of property damage. Only use the
jack to change an emergency or spare wheel
in the event of a breakdown.
NOTICE
Using an impact wrench to loosen or tighten
the wheel lock bolt can damage the wheel
lock bolt. There is a risk of property damage.
Only use a lug wrench to loosen and tighten
the wheel lock bolt.
Warning
Securing the vehicle against rolling
away
The jack may slip on soft, uneven, or slippery
ground, e.g., snow, ice, tiles, etc. There is a
risk of injury. If possible, change the wheel on
a flat, solid, slip-resistant surface.
General information
The vehicle manufacturer recommends to ad-
ditionally secure the vehicle against rolling
away when changing a wheel.
Warning
The jack is optimized for lifting the vehicle
and for the jacking points on the vehicle only.
There is a risk of injury. Do not lift any other
vehicle or cargo using the jack.
Warning
When the jack is not inserted into the jacking
point provided for this purpose, the vehicle
may be damaged or the jack may slip when
it is being cranked up. There is a risk of injury
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Wheels and tires
MOBILITY
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In the cargo area under the cargo area
floor.
On a level surface
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In the cargo area on the left or right side.
In the cargo area behind a side trim panel.
Place chocks or other suitable objects in front
and behind the wheel that is diagonal to the
wheel being changed.
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Lug lock bolt, arrow 1.
Adapter, arrow 2.
On a slight downhill gradient
Unscrewing
1. Attach the adapter to the lug lock bolt.
2. Unscrew the lug lock bolt.
3. Remove the adapter after unscrewing the
lug bolt.
Screwing on
If it is necessary to change a wheel on a slight
downhill gradient, place chocks and other suit-
able objects, e.g., rocks, under the wheels of
the front and rear axles, against the direction
that the vehicle will move.
1. Attach the adapter to the lug lock bolt. If
necessary, turn the adapter until it fits on
the lug lock bolt.
2. Screw on the lug lock bolt. The tightening
torque is 101 lbs ft/140 Nm.
3. Remove the adapter and stow it after
screwing on the lug bolt.
Lug bolt lock
Principle
Preparing the vehicle
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
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Park the vehicle on solid and non-slip
ground at a safe distance from road traffic.
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Turn on the hazard warning system.
Set the parking brake.
Overview
Engage a gear or move the selector lever to
position P.
Depending on vehicle equipment, store the lug
bolt lock adapter as follows:
▷
As soon as permitted by the traffic flow,
have all vehicle occupants get out and
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Wheels and tires
MOBILITY
make sure that they remain outside the
hazardous area such as behind a guardrail.
1. Hold the vehicle jack with one hand, ar-
row 1, and grasp the jack crank handle or
lever with your other hand, arrow 2.
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▷
Depending on the vehicle equipment, get
wheel change tools and, if necessary, the
emergency wheel from the vehicle.
If necessary, set up a warning triangle or
portable hazard warning light at an appro-
priate distance.
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▷
Secure the vehicle additionally against roll-
ing away.
Loosen the lug bolts a half turn.
2. Insert the jack into the rectangular recess of
the jacking point closest to the wheel to be
changed.
Jacking points
The jacking points are located at the indicated
positions.
3. Extend the jack by turning the jack crank
handle or lever clockwise.
Jacking up the vehicle
Warning
Hands and fingers can be jammed when us-
ing the jack. There is a risk of injury. Comply
with the described hand position and do not
change this position while using the jack.
4. Take your hand away from the jack as soon
as the jack is under load and continue turn-
ing the jack crank handle or lever with one
hand.
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Wheels and tires
MOBILITY
5. Make sure that the car jack foot extends
vertically and is at a right angle beneath the
jacking point.
3. Check tire inflation pressure at the next op-
portunity and correct as needed.
4. Re-initialize the flat tire monitor or reset the
Tire Pressure Monitor.
5. Check to make sure the lug bolts are tight
with a calibrated torque wrench.
6. Drive to the nearest authorized service cen-
ter or another qualified service center or
repair shop, then have the damaged tire
replaced.
Emergency wheel
6. Crank the vehicle up until the vehicle jack
has the entire surface on the ground
and the relevant wheel is maximum 1.2 in-
ches/3 cm above ground.
Principle
In the event of a flat tire, the emergency wheel
can be used in place of the wheel with the
faulty tire. The emergency wheel is only in-
tended for temporary use until the faulty tire/
wheel has been replaced.
Mounting a wheel
Mount one emergency wheel only, as required.
1. Unscrew the lug bolts.
2. Remove the wheel.
General information
Mount one emergency wheel only.
3. Put the new wheel or emergency wheel on
and screw in at least two lug bolts in a
crosswise pattern until hand-tight.
Also check the tire inflation pressure of the
emergency wheel in the cargo area regularly,
and correct it as needed.
When non-original light-alloy wheels of the
vehicle manufacturer are mounted, the ac-
companying lug bolts may have to be used
as well.
Safety information
4. Hand-tighten the remaining lug bolts and
tighten all lug bolts well in a crosswise pat-
tern.
Warning
The emergency wheel has particular dimen-
sions. When driving with an emergency
wheel, changed driving properties may oc-
cur, for instance reduced directional stabil-
ity when braking, longer braking distance,
and changed self-steering properties in the
limit range. There is a risk of accident. Drive
moderately and do not exceed a speed of
50 mph/80 km/h.
5. Turn the jack crank handle counterclock-
wise to retract the jack and lower the vehi-
cle.
6. Remove the jack and stow it securely.
After the wheel change
1. Tighten the lug bolts crosswise. The tight-
ening torque is 101 lbs ft/140 Nm.
2. Stow the faulty wheel in the cargo area, if
necessary.
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Wheels and tires
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Overview
Inserting the emergency wheel
1. Place the emergency wheel in the storage
tray.
2. Tie the luggage strap. Make sure that it is
correctly and firmly seated.
3. Install the cover.
4. Lift the cargo area floor up slightly and fold
in the multi-function hook.
5. Lower the cargo area floor and fold it to-
ward the rear.
The emergency wheel and the wheel change
tools are located in the cargo area under the
cargo area floor.
Removing the emergency wheel
1. Fold the rear part of the cargo area floor
forward.
2. Lift the cargo area floor and place it onto
the folded out multi-function hook.
3. Remove the cover.
4. Open the luggage strap at the clasp, ar-
row 1.
5. Remove the emergency wheel from the
storage tray, arrow 2.
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