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EnglishMOBILITY -> Wheels and tires for your BMW i3 2013-2022
Wheels and tires
MOBILITY
Wheels and tires
Tire inflation pressure specifications
In the tire inflation pressure table
Vehicle features and options
This chapter describes all standard, country-spe‐
cific and optional features offered with the series.
It also describes features and functions that are
not necessarily available in your vehicle, e.g., due
to the selected options or country versions. This
also applies to safety-related functions and sys‐
tems. When using these functions and systems,
the applicable laws and regulations must be ob‐
served.
The tire inflation pressure table, refer to
page 224, contains all tire inflation pressure
specifications for the specified tire sizes at the
ambient temperature. The tire inflation pressure
values apply to tire sizes approved by the manu‐
facturer of the vehicle for the vehicle type.
To identify the correct tire inflation pressure,
please note the following:
▷ Tire sizes of your vehicle.
Tire inflation pressure
Checking the tire inflation pressure
General information
Tires heat up while driving. The tire inflation
pressure increases with the tire temperature.
General information
The tire inflation pressure and tire characteristics
influence the following:
▷ The service life of the tires.
▷ Road safety.
Tires have a natural, consistent loss of tire infla‐
tion pressure.
▷ Driving comfort.
The displays of inflation devices may under-read
by up to 0.1 bar/2 psi.
▷ Driving dynamics.
▷ Fuel consumption.
Checking using tire inflation pressure
specifications in the tire inflation pressure
table
Safety information
The tire inflation pressure specifications in the
tire inflation pressure table only relate to cold
tires or tires at the same temperature as the am‐
bient temperature.
Warning
A tire with too little or no tire inflation pressure
may heat up significantly and sustain damage.
This will have a negative impact on aspects of
handling, such as steering and braking re‐
sponse. There is a risk of accident. Regularly
check the tire inflation pressure, and correct it
as needed, for instance twice a month and be‐
fore a long trip.
Only check the tire inflation pressure levels when
the tires are cold, i.e.:
▷ Driving distance 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.
223
Wheels and tires
MOBILITY
Tire pressure values
1. Determine the intended tire inflation pressure
levels for the mounted tires.
i3 without Range Extender
2. Check the tire inflation pressure in all four
tires, using a pressure gage, for example.
Tire size
Pressure specifications in
3. Correct the tire inflation pressure if the actual
tire inflation pressure deviates from the in‐
tended tire inflation pressure.
bar/PSI
Specifications in
bar/PSI with cold
tires
4. Check whether all valve caps are screwed
onto the tire valves.
After correcting the tire inflation pressure
For run-flat tires: reinitialize run-flat tires.
155/70 R 19 84
Q A/S
2.7 / 39
3.0 / 44
For the Tire Pressure Monitor TPM: reset the
Tire Pressure Monitor TPM.
155/70 R 19 84
Q
155/70 R 19 88
Q XL M+S
Tire fill pressures
To achieve optimum driving comfort, note the
tire inflation pressure specifications in the Tire in‐
flation pressure table, refer to page 224, and ad‐
just as needed.
Front: 155/70 R
19 84 Q A/S
2.7 / 39
-
Rear: 175/60 R
19 86 Q A/S
-
3.0 / 44
Front: 155/70 R
19 84 Q
2.7 / 39
-
Rear: 175/60 R
19 86 Q
-
3.0 / 44
Front: 155/60 R
20 80 Q
2.7 / 39
-
Rear: 175/55 R
20 89 Q XL
-
3.0 / 44
-
These tire inflation pressure values can also be
found on the tire inflation pressure label on the
driver's side on the rear door.
Front: 175/55 R
20 89 T XL
2.7 / 39
-
Do not exceed a speed of 100 mph/160 km/h.
Rear: 195/50 R
20 93 T XL
3.0 / 44
224
Wheels and tires
Tire size
MOBILITY
i3 with Range Extender
Pressure specifications in
bar/PSI
Tire size
Pressure specifications in
bar/PSI
Front: 175/55
R 20 89 T XL
2.7 / 39
-
Specifications in
bar/PSI with cold
tires
Rear: 195/50 R
20 93 T XL
-
3.0 / 44
155/70 R 19 88 2.7 / 39
Q XL M+S
3.0 / 44
Tire identification marks
Front: 155/70 R 2.7 / 39
19 84 Q A/S
-
Tire size
245/45 R 18 96 Y
Rear: 175/60 R
19 86 Q A/S
-
3.0 / 44
245: nominal width in mm
45: aspect ratio in %
Front: 155/70 R 2.7 / 39
19 84 Q
-
R: radial tire code
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
Rear: 175/60 R
19 86 Q
-
3.0 / 44
Front: 155/60 R 2.7 / 39
20 80 Q
-
Maximum tire load
Maximum tire load is the maximum permissible
weight for which the tire is approved.
Rear: 175/55 R
20 89 Q XL
-
3.0 / 44
-
Locate the maximum tire load on the tire sidewall
and the Gross Axle Weight Rating – GAWR – on
the certification label on the driver’s side on the
rear door.
Front: 175/55 R 2.7 / 39
20 89 T XL
Rear: 195/50 R
20 93 T XL
-
3.0 / 44
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.
i3s
Tire size
Pressure specifications in
bar/PSI
Speed letter
Specifications
in bar/PSI with
cold tires
Designation
Maximum speed
Q
R
S
T
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
155/70 R 19
88 Q XL M+S
2.7 / 39
3.0 / 44
225
Wheels and tires
MOBILITY
All passenger vehicle tires must conform to Fed‐
eral Safety Requirements in addition to these
grades.
Designation
Maximum speed
H
V
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
Treadwear
W
Y
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, however, and
may depart significantly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate.
Tire Identification Number
DOT-Code: DOT xxxx xxx 0121
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
0121: tire age
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
Regardless of the tire tread, replace tires at least
every 6 years.
Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test surfa‐
ces of asphalt and concrete. A tire marked C may
have poor traction performance.
Manufacture date
You can find the manufacture date of the tire on
the tire's sidewall.
The traction grade assigned to this tire is based
on straight-ahead braking traction tests, and
does not include acceleration, cornering, hydro‐
planing, or peak traction characteristics.
Designation
Manufacture date
1st week 2021
DOT … 0121
Temperature
Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width.
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 exces‐
sive temperature can lead to sudden tire failure.
The grade C corresponds to a level of perform‐
ance which all passenger car tires must meet un‐
der the Federal Motor Vehicle Safety Standard
No. 109. Grades Band A represent higher levels
E.g.: Treadwear 200; Traction AA; Temperature
A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
226
Wheels and tires
MOBILITY
of performance on the laboratory test wheel than
the minimum required by law.
The positions of the wear indicators are marked
on the tire sidewall with TWI, Tread Wear Indica‐
tor.
Warning
The temperature grade for this tire is estab‐
lished for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in com‐
bination, can cause heat buildup and possible
tire failure.
Tire damage
General information
Inspect your tires regularly for damage, foreign
objects lodged in the tread, and tread wear.
Driving over rough or damaged road surfaces, as
well as debris, curbs and other obstacles can
cause serious damage to wheels, tires and sus‐
pension parts. This is more likely to occur with
low-profile tires, which provide less cushioning
between the wheel and the road. Be careful to
avoid road hazards and reduce your speed, es‐
pecially if your vehicle is equipped with low-pro‐
file tires.
M+S
Winter and all-season tires with better cold
weather performance than summer tires.
Tire tread
Indications of tire damage or other vehicle mal‐
functions:
Summer tires
Do not drive with a tire tread of less than
0.12 in/3 mm, otherwise there is an increased
risk of hydroplaning.
▷ Unusual vibrations.
▷ Unusual tire or running noises.
▷ Unusual handling such as a strong tendency
to pull to the left or right.
Winter tires
Do not drive with a tire tread of less than
0.16 in/4 mm, as such tires are less suitable for
winter operation.
Damage can be caused by the following situa‐
tions, for instance:
▷ Driving over curbs.
▷ Road damage.
Minimum tread depth
▷ Tire inflation pressure too low.
▷ Vehicle overloading.
▷ Incorrect tire storage.
Safety information
Warning
Damaged tires can lose tire inflation pressure,
which can lead to loss of vehicle control. There
is a risk of accident. If tire damage is suspected
while driving, immediately reduce speed and
stop. Have wheels and tires checked. For this
purpose, drive carefully to the nearest dealer’s
Wear indicators are distributed around the tire's
circumference and have the legally required min‐
imum height of 0.063 inches/1.6 mm.
227
Wheels and tires
MOBILITY
service center or another qualified service cen‐
ter or repair shop. Have vehicle towed or trans‐
ported as needed. Do not repair damaged tires,
but have them replaced.
mended by the vehicle manufacturer for your
vehicle type.
Warning
Incorrect wheel/tire combinations will have a
negative impact on the vehicle's handling and
on the function of a variety of systems, such as
the ABS Antilock Braking System or DSC Dy‐
namic Stability Control. There is a risk of acci‐
dent. To maintain good handling and vehicle
response, use only tires with a single tread con‐
figuration from a single manufacturer. The
manufacturer of the vehicle recommends that
you use wheels and tires that have been rec‐
ommended by the vehicle manufacturer for
your vehicle type. Following tire damage, have
the original wheel/tire combination remounted
on the vehicle as soon as possible.
Warning
Tires can become damaged by driving over ob‐
stacles, e.g., curbs or road damage, at high
speed. Larger wheels have a smaller tire cross-
section. The smaller the tire cross-section, the
higher the risk of tire damage. There is a dan‐
ger of accidents and property damage. If possi‐
ble, avoid driving over objects or road condi‐
tions that may damage tires, or drive over them
slowly and carefully.
Changing wheels and tires
Recommended tire brands
Mounting
Have mounting and wheel balancing carried out
by a dealer’s service center or another qualified
service center or repair shop.
Wheel and tire combination
General information
You can ask the dealer's service center or an‐
other qualified service center or repair shop
about the correct wheel/tire combination and
wheel rim versions for the vehicle.
For each tire size, the manufacturer of the vehi‐
cle recommends certain tire brands. The tire
brands can be identified by a star on the tire
sidewall.
Safety information
New tires
Warning
Tire traction is not optimal due to manufacturing
circumstances when tires are brand-new; they
achieve their full traction potential after a break-in
time.
Wheels and tires which are not suitable for your
vehicle can damage parts of the vehicle, for in‐
stance due to contact with the body due to tol‐
erances despite the same official size rating.
There is a risk of an accident. The manufac‐
turer of your vehicle strongly suggests that you
use wheels and tires that have been recom‐
Drive conservatively for the first
200 miles/300 km.
228
Wheels and tires
MOBILITY
conditions. The tires can be rotated in pairs be‐
tween the axles to achieve even wear. Further in‐
formation is available from a dealer's service cen‐
ter or another qualified service center or repair
shop. After rotating, check the tire pressure and
correct, if needed.
Retreaded tires
Warning
Retreaded tires can have different tire casing
structures. With advanced age the service life
can be limited. There is a risk of an accident.
The manufacturer of your vehicle does not rec‐
ommend the use of retreaded tires.
Storing tires
Tire inflation pressure
Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.
The manufacturer of the vehicle does not rec‐
ommend the use of retreaded tires.
Winter tires
Winter tires are recommended for operating on
winter roads.
Storage
▷ Store wheels and tires in a cool, dry and dark
place.
Although so-called all-season M+S tires provide
better winter traction than summer tires, they
usually do not provide the same level of perform‐
ance as winter tires.
▷ Always protect tires against all contact with
oil, grease, and solvents.
▷ Do not leave tires in plastic bags.
▷ Remove dirt from wheels or tires.
Maximum speed of winter tires
If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then attach a label showing the permissible maxi‐
mum speed in the field of view. The label is avail‐
able from a dealer's service center or another
qualified service center or repair shop.
Repairing a flat tire
Safety measures
▷ Park the vehicle as far away as possible from
passing traffic and on solid ground.
With winter tires mounted, observe and do not
exceed the permissible maximum speed.
▷ Switch on the hazard warning system.
▷ Secure the vehicle against rolling away by
setting the parking brake.
Rotating wheels between axles
▷ Turn the steering wheel until the front wheels
are in the straight-ahead position and engage
the steering wheel lock.
Warning
Rotating tires between the axles on vehicles
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. Do
not rotate the tires between the axles on vehi‐
cles with different tire sizes or rim sizes on the
front and rear axles.
▷ Have all vehicle occupants get out of the ve‐
hicle and ensure that they remain outside the
immediate area in a safe place, such as be‐
hind a guardrail.
▷ If necessary, set up a warning triangle at an
appropriate distance.
Different wear patterns can occur on the front
and rear axles depending on individual driving
229
Wheels and tires
MOBILITY
Sealant container
Mobility System
Concept
With the Mobility System, minor tire damage can
be sealed temporarily to enable continued travel.
To accomplish this, sealant is pumped into the
tires, which seals the damage from the inside.
General information
▷ Follow the instructions on using the Mobility
System found on the compressor and sealant
container.
▷ Sealant container, arrow 1.
▷ Filling hose, arrow 2.
Observe use-by date on the sealant container.
▷ Use of the Mobility System may be ineffec‐
tive if the tire puncture measures approx.
1/8 inches/4 mm or more.
Compressor
▷ Contact a dealer's service center or another
qualified service center or repair shop if the
tire cannot be made drivable.
▷ Do not remove foreign bodies that have pe‐
netrated the tire. Only remove foreign objects
if they are visibly protruding from the tire.
▷ Pull the speed limit sticker off the sealant
container and apply it to the steering wheel.
▷ The use of a sealant can damage the TPM
wheel electronics. In this case, have the TPM
wheel electronics replaced at the next oppor‐
tunity.
1
2
3
4
5
6
7
8
Sealant container unlocking
Sealant container holder
Tire pressure gage
▷ The compressor can be used to check the
tire inflation pressure.
Reduce tire inflation pressure button
On/off switch
Compressor
Overview
Storage
Connector/cable for socket
Connection hose
The Mobility System is located in the storage
compartment under the hood.
230
Wheels and tires
MOBILITY
2. Pull filling hose completely out of the cover of
the sealant container. Do not kink the hose.
Filling the tire with sealant
Safety information
DANGER
If the exhaust pipe is blocked or ventilation is in‐
sufficient, harmful exhaust gases can enter into
the vehicle. The exhaust gases contain pollu‐
tants which are colorless and odorless. In en‐
closed areas, exhaust gases can also accumu‐
late outside of the vehicle. There is danger to
life. Keep the exhaust pipe free and ensure suf‐
ficient ventilation.
3. Slide the sealant container into the holder on
the compressor housing, ensuring that it en‐
gages audibly.
NOTICE
The compressor can overheat during extended
operation. There is a risk of damage to prop‐
erty, among other potential damage. Do not run
the compressor for more than 10 minutes.
Filling
1. Shake the sealant container.
4. Screw the filling hose of the sealant container
onto the tire valve of the nonworking wheel.
231
Wheels and tires
MOBILITY
5. With the compressor switched off, insert the
connector into the power socket in the vehi‐
cle interior.
Removing and stowing the sealant
container
1. Unscrew the filling hose of the sealant con‐
tainer from the tire valve.
2. Press the red unlocking device.
3. Remove the sealant container from the com‐
pressor.
4. Wrap and store the sealant container in suita‐
ble material to avoid dirtying the cargo area.
Minimum tire inflation pressure is not
reached
1. Pull the connector out of the power socket in
the vehicle interior.
6. With standby state or drive-ready state
switched on, switch on the compressor.
2. Drive 33 ft/10 m forward and back to distrib‐
ute the sealant in the tire.
3. Screw the connection hose of the compres‐
sor directly onto the tire valve stem.
Let the compressor run for max. 10 minutes to fill
the tire with sealant and achieve a tire inflation
pressure of approx. 2.0 bar.
While the tire is being filled with sealant, the tire
inflation pressure may sporadically reach approx.
5 bar. Do not switch off the compressor at this
point.
4. Insert the connector into the power socket in
the vehicle interior.
Checking and adjusting the tire
inflation pressure
Checking
1. Switch off the compressor.
2. Read the tire inflation pressure on the tire
pressure gage.
To continue the trip, a tire inflation pressure of at
least 2 bar must be reached.
5. With standby state or drive-ready state
switched on, switch on the compressor.
232
Wheels and tires
MOBILITY
If a tire inflation pressure of at least 2 bar can‐
not be reached, contact your dealer's service
center or another qualified service center or
repair shop.
3. Insert the connector into the power socket in
the vehicle interior.
If a tire inflation pressure of at least 2 bar is
reached, see Minimum tire inflation pressure
is reached.
6. Unscrew the connection hose of the com‐
pressor from the tire valve.
7. Pull the connector out of the power socket in
the vehicle interior.
4. Correct the tire inflation pressure to at least
2.0 bar.
8. Stow the Mobility System in the vehicle.
▷ Increase tire inflation pressure: with
standby state or drive-ready state
Minimum tire inflation pressure is
reached
1. Unscrew the connection hose of the com‐
pressor from the tire valve.
switched on, switch on the compressor.
▷ To reduce the pressure: press the button
on the compressor.
2. Pull the connector out of the power socket in
the vehicle interior.
5. Unscrew the connection hose of the com‐
pressor from the tire valve.
3. Stow the Mobility System in the vehicle.
6. Pull the connector out of the power socket in
the vehicle interior.
4. Immediately drive approx. 5 miles/10 km to
ensure that the sealant is evenly distributed in
the tire.
7. Stow the Mobility System in the vehicle.
Do not exceed a speed of 50 mph/80 km/h.
Continuing the trip
Do not exceed the maximum permissible speed
of 50 mph/80 km/h.
If possible, do not drive at speeds less than
12 mph/20 km/h.
Reinitialize the Flat Tire Monitor.
Adjustment
Reset the Tire Pressure Monitor TPM.
1. Stop at a suitable location.
Replace the nonworking tire and the sealant con‐
tainer of the Mobility System at the next opportu‐
nity.
2. Screw the connection hose of the compres‐
sor directly onto the tire valve stem.
233
Wheels and tires
MOBILITY
Do not reset the Tire Pressure Monitor TPM af‐
ter mounting tire chains, as doing so may result
in incorrect readings.
i3 without Sport Package: tire
chains
When driving with tire chains, briefly activate Dy‐
namic Traction Control DTC, if needed.
Safety information
Maximum speed with tire chains
Warning
Do not exceed a speed of 30 mph/50 km/h when
using tire chains.
With the mounting of tire chains on unsuitable
tires, the tire chains can come into contact with
vehicle parts. There may be a risk of accident
or risk of damage to property. Only mount tire
chains on tires that are designated by their
manufacturer as suitable for the use of tire
chains.
i3s and vehicles with Sport
Package: tire chains
General information
The manufacturer of the vehicle has determined
certain wheels and tires to be suitable for opera‐
tion on the vehicle. Mounting of tire chains on
these wheels and tires is not permitted.
Warning
Insufficiently tight tire chains may damage tires
and vehicle components. There may be a risk
of accident or risk of damage to property. Make
sure that the tire chains are always sufficiently
tight. Re-tighten as needed according to the
tire chain manufacturer's instructions.
Safety information
Warning
With the mounting of tire chains on unsuitable
tires, the tire chains can come into contact with
vehicle parts. There may be a risk of accident
or risk of damage to property. Do not mount tire
chains.
Fine-link tire chains
The manufacturer of the vehicle recommends
the use of fine-link tire chains. Certain types of
fine-link tire chains have been tested by the
manufacturer of the vehicle and recommended
as road-safe and suitable.
Information regarding suitable tire chains is avail‐
able from a dealer’s service center or another
qualified service center or repair shop.
Changing wheels/tires
General information
When a flat tire kit is used, an immediate wheel
change when there is a loss of tire inflation pres‐
sure in the event of a flat tire is not always neces‐
sary.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷ 155/70 R 19.
If needed, the tools for changing wheels are
available as accessories from a dealer’s service
center or another qualified service center or re‐
pair shop.
Follow the tire chain manufacturer's instructions.
Do not initialize the Flat Tire Monitor after
mounting tire chains, as doing so may result in
incorrect readings.
234
Wheels and tires
MOBILITY
Safety information
Warning
The vehicle jack is optimized for lifting the vehi‐
cle 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 vehicle jack.
DANGER
The vehicle jack is only provided for short-term
lifting of the vehicle for wheel changes. Even if
all safety measures are observed, there is a risk
of the raised vehicle falling, if the vehicle jack
tips over. There is a risk of injuries or danger to
life. When the vehicle is raised with the vehicle
jack, do not lie under the vehicle and do not
switch on the drive-ready state.
Warning
When the vehicle jack is not inserted into the
jacking point provided for this purpose, the ve‐
hicle may be damaged or the vehicle jack may
slip when it is being cranked up. There is a risk
of injury or risk of damage to property. When
cranking up the vehicle jack, ensure that it is in‐
serted in the jacking point next to the wheel
housing.
DANGER
Supports such as wooden blocks under the ve‐
hicle jack reduce the capacity of the vehicle
jack to bear weight. They have the potential to
exert too much strain on the vehicle jack, caus‐
ing it to tip over and the vehicle to fall. There is
a risk of injuries or danger to life. Do not place
supports under the vehicle jack.
Warning
A vehicle that is raised on a vehicle jack may fall
off of the jack if lateral forces are exerted on it.
There is a risk of injury and risk of damage to
property. While the vehicle is raised, do not ex‐
ert lateral forces on the vehicle or pull abruptly
on the vehicle. Have a stuck wheel removed by
a dealer’s service center or another qualified
service center or repair 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 de‐
signed for frequent use; for example, changing
from summer to winter tires. Using the jack fre‐
quently may cause it to become jammed or
damaged. There is a risk of injury and risk of
damage to property. Only use the jack to attach
an emergency or spare wheel in the event of a
breakdown.
Securing the vehicle against rolling
General information
The vehicle manufacturer recommends to addi‐
tionally secure the vehicle against rolling away
when changing a wheel.
Warning
On soft, uneven or slippery ground, for example
snow, ice, tiles, etc., the vehicle jack can slip
away. There is a risk of injury. If possible,
change the wheel on a flat, solid, and slip-re‐
sistant surface.
235
Wheels and tires
MOBILITY
On a level surface
▷ Lug bolt, arrow 1.
▷ Adapter, arrow 2.
Place chocks or other suitable objects, for exam‐
ple rocks, in front of and behind the wheel that is
diagonally opposite to the wheel that you wish to
change.
Unscrewing
1. Attach the adapter to the lug bolt.
2. Unscrew the lug bolt.
On a slight downhill gradient
3. Remove the adapter after unscrewing the lug
bolt.
Screwing on
1. Attach the adapter to the lug bolt. If neces‐
sary, turn the adapter until it fits on the lug
bolt.
2. Screw on the lug bolt. The tightening torque
is 140 Nm.
3. Remove the adapter and stow it after screw‐
ing on the lug bolt.
If you need to change a wheel on a slight down‐
hill grade, place chocks and other suitable ob‐
jects, for instance rocks, under the wheels of
both the front and rear axles against the rolling
direction.
Preparing the vehicle
▷ Park the vehicle on solid and non-slip ground
at a safe distance from traffic.
▷ Switch on the hazard warning system.
▷ Set the parking brake.
Lug bolt lock
Concept
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
▷ Engage a gear or move the selector lever to
position P.
▷ As soon as permitted by the traffic flow, have
all vehicle occupants get out of the vehicle
and ensure that they remain outside the im‐
mediate area in a safe place, such as behind a
guardrail.
Overview
The adapter of the lug bolt lock is in the onboard
vehicle tool kit or in a storage compartment close
to the onboard vehicle tool kit.
236
Wheels and tires
MOBILITY
▷ Depending on the vehicle equipment, get
wheel change tools and, if necessary, the
emergency wheel from the vehicle.
1. Hold the vehicle jack with one hand, arrow 1,
and grasp the vehicle jack crank with your
other hand, arrow 2.
▷ If necessary, set up a warning triangle or port‐
able hazard warning light at an appropriate
distance.
▷ Secure the vehicle additionally against rolling.
▷ Loosen the lug bolts a half turn.
Jacking points for the vehicle jack
2. Insert the vehicle jack into the rectangular re‐
cess of the jacking point closest to the wheel
to be changed.
The jacking points for the vehicle jack are lo‐
cated at the indicated positions.
Jacking up the vehicle
3. Extend the vehicle jack by turning the vehicle
jack crank or lever clockwise.
Warning
Hands and fingers can be jammed when using
the vehicle jack. There is a risk of injury. Com‐
ply with the described hand position and do not
change this position while using the vehicle
jack.
4. Take your hand away from the vehicle jack as
soon as the vehicle jack is under load and
continue turning the vehicle jack crank or
lever with one hand.
237
Wheels and tires
MOBILITY
5. Make sure that the vehicle jack foot stands
vertically and at a right angle beneath the
jacking point.
5. Turn the vehicle jack crank counterclockwise
to retract the vehicle jack and lower the vehi‐
cle.
6. Remove the vehicle jack and stow it securely.
After the wheel change
1. Tighten the lug bolts crosswise. The tighten‐
ing torque is 101 lbs ft/140 Nm.
2. Stow the nonworking wheel in the cargo area,
if necessary.
The nonworking wheel cannot be stored un‐
der the cargo floor panel because of its size.
6. Make sure that the vehicle jack foot stands
vertically and perpendicularly beneath the
jacking point after extending the vehicle jack.
3. Check tire inflation pressure at the next op‐
portunity and correct as needed.
4. Reinitialize the Flat Tire Monitor.
Reset the Tire Pressure Monitor TPM.
5. Check to make sure the lug bolts are tight
with a calibrated torque wrench.
6. Have the damaged tire replaced at the near‐
est dealer's service center or another quali‐
fied service center or repair shop.
7. Crank the vehicle up, until the vehicle jack is
with the entire surface on the ground and the
relevant wheel is maximum 1.2 inches/3 cm
above ground.
Mounting a wheel
Mount one emergency wheel only, as required.
1. Unscrew the lug bolts.
2. Remove the wheel.
3. Put the new wheel or emergency wheel on
and screw in at least two lug bolts in a cross‐
wise pattern until hand-tight.
If non-original light-alloy wheels of the vehicle
manufacturer are mounted, the accompany‐
ing lug bolts may have to be used as well.
4. Hand-tighten the remaining lug bolts and
tighten all lug bolts well in a crosswise pat‐
tern.
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