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EnglishWheels and tires for your BMW i8 2014-2020
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 that are not necessarily
available in your vehicle, for instance, due to the
selected options or country versions. This also
applies to safety-related functions and systems.
When using these functions and systems, the
applicable laws and regulations must be ob‐
served.
The tire inflation pressure table, refer to
page 207, 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.
▷ Maximum permitted driving speed.
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.
▷ Driving dynamics.
▷ Fuel consumption.
The displays of inflation devices may under-read
by up to 0.1 bar/2 psi.
Checking using tire inflation pressure
specifications in the tire inflation pressure
table
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.
Safety information
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 range of max. 1.25 miles/2 km has not
been exceeded.
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▷ If the vehicle has not moved again for at least
2 hours after a trip.
Tire inflation pressure values up to
100 mph/160 km/h
1. Determine the intended tire inflation pressure
levels for the mounted tires.
i8 Coupe
2. Check the tire inflation pressure in all four
tires, using a pressure gage, for example.
Tire size
Pressure specifications in
bar/PSI
3. Correct the tire inflation pressure if the actual
tire inflation pressure deviates from the in‐
tended tire inflation pressure.
Specifications in
bar/PSI with
cold tires
4. Check whether all valve caps are screwed
onto the tire valves.
215/45 R 20 95 2.2 / 32
V XL M+S
2.2 / 32
After correcting the tire inflation pressure
For run-flat tires: reinitialize run-flat tires.
Front: 195/50 R 2.2 / 32
20 93 W XL
-
For the Tire Pressure Monitor TPM: reset the
Tire Pressure Monitor TPM.
Rear: 215/45 R
20 95 W XL
-
2.2 / 32
-
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 tire inflation
pressure values in the tire inflation pressure ta‐
ble, refer to page 207, and adjust as necessary.
Front: 215/45 R 2.2 / 32
20 95 W XL
Rear: 245/40 R
20 99 W XL
-
2.2 / 32
Tire inflation pressures at max.
speeds above 100 mph/160 km/h
Warning
In order to drive at maximum speeds in excess
of 100 mph/160 km/h, please observe, and, if
necessary, adjust tire pressures for speeds ex‐
ceeding 100 mph/160 km/h from the relevant
table on the following pages. Otherwise, tire
damage and accidents could occur.
These tire inflation pressure values can also be
found on the tire inflation pressure label on the
driver's door pillar.
For speeds over 100 mph/160 km/h and for opti‐
mum driving comfort, note the pressure values in
the tire inflation pressure table, refer to
Do not exceed a speed of 100 mph/160 km/h.
page 208, and adjust as necessary.
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Wheels and tires
MOBILITY
Locate the maximum tire load on the tire sidewall
and the Gross Axle Weight Rating – GAWR – on
the certification label on the driver’s door pillar.
Tire inflation pressure values over
100 mph/160 km/h
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.
i8 Coupe
Tire size
Pressure specifications in
bar/PSI
Specifications in
bar/PSI with
cold tires
Speed letter
Designation
Maximum speed
Q
R:
S
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
215/45 R 20 95 2.3 / 33
V XL M+S
2.8 / 41
Front: 215/45 R 2.3 / 33
20 95 W XL
-
T
Rear: 245/40 R
20 99 W XL
-
2.8 / 41
-
H
V
Front: 195/50 R 2.5 / 36
20 93 W XL
W
Y
Rear: 215/45 R
20 95 W XL
-
3.0 / 44
Tire Identification Number
DOT code: DOT xxxx xxx 3819
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
3819: tire age
Tire identification marks
Tire size
245/45 R 18 96 Y
Tires with DOT codes meet the guidelines of the
U.S. Department of Transportation.
245: nominal width in mm
45: aspect ratio in %
R: radial tire code
Tire age
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
Recommendation
Regardless of the tire tread, replace tires at least
every 6 years.
Maximum tire load
Maximum tire load is the maximum permissible
weight for which the tire is approved.
Manufacture date
You can find the manufacture date of the tire on
the tire's sidewall.
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MOBILITY
does not include acceleration, cornering, hydro‐
planing, or peak traction characteristics.
Designation
Manufacture date
38th week, 2019
DOT … 3819
Temperature
Uniform Tire Quality Grading
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
of performance on the laboratory test wheel than
the minimum required by law.
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width.
E.g.: Treadwear 200; Traction AA; Temperature
A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
All passenger vehicle tires must conform to Fed‐
eral Safety Requirements in addition to these
grades.
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.
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, however, and
may depart significantly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate.
M+S
Winter and all-season tires with better cold
weather performance than summer tires.
Tire tread
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
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.
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.
Winter tires
The traction grade assigned to this tire is based
on straight-ahead braking traction tests, and
Do not drive with a tire tread of less than
0.16 in/4 mm, as such tires are less suitable for
winter operation.
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▷ Tire inflation pressure too low.
▷ Vehicle overloading.
Minimum tread depth
▷ 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
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.
Wear indicators are distributed around the tire's
circumference and have the legally required min‐
imum height of 0.063 inches/1.6 mm.
The positions of the wear indicators are marked
on the tire sidewall with TWI, Tread Wear Indica‐
tor.
Tire damage
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.
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.
Changing wheels and tires
Indications of tire damage or other vehicle mal‐
functions:
Mounting
Have mounting and wheel balancing carried out
by a dealer’s service center or another qualified
service center or repair shop.
▷ Unusual vibrations.
▷ Unusual tire or running noises.
▷ Unusual handling such as a strong tendency
to pull to the left or right.
Damage can be caused by the following situa‐
tions, for instance:
▷ Driving over curbs.
▷ Road damage.
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Wheel and tire combination
General information
Recommended tire brands
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.
Safety information
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.
Warning
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‐
mended by the vehicle manufacturer for your
vehicle type.
New tires
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.
Drive conservatively for the first
200 miles/300 km.
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 Anti-lock Brake 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.
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.
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.
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.
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Maximum speed of winter tires
Repairing a flat tire
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.
Safety measures
▷ Park the vehicle as far away as possible from
passing traffic and on solid ground.
▷ Switch on the hazard warning system.
With winter tires mounted, observe and do not
exceed the permissible maximum speed.
▷ Secure the vehicle against rolling away by
setting the parking brake.
▷ Turn the steering wheel until the front wheels
are in the straight-ahead position and engage
the steering wheel lock.
Rotating wheels between 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.
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.
▷ If necessary, set up a warning triangle at an
appropriate distance.
Snow chains
Safety information
Warning
Different wear patterns can occur on the front
and rear axles depending on individual driving
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.
With the mounting of snow chains on unsuita‐
ble tires, the snow chains can come into con‐
tact with vehicle parts. There may be a risk of
accident or risk of damage to property. Only
mount snow chains on tires that are designated
by their manufacturer as suitable for the use of
snow chains.
Storing tires
Tire inflation pressure
Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.
Warning
Storage
Insufficiently tight snow chains may damage
tires and vehicle components. There may be a
risk of accident or risk of damage to property.
Make sure that the snow chains are always suf‐
ficiently tight. Re-tighten as needed according
to the snow chain manufacturer's instructions.
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.
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Fine-link snow chains
Safety information
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 recommended
as road-safe and suitable.
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. If the vehicle is raised, do not lie under the
vehicle and do not start the engine.
Information regarding suitable snow chains is
available from a dealer’s service center or an‐
other qualified service center or repair shop.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
DANGER
▷ 215/45 R 20.
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.
Follow the snow chain manufacturer's instruc‐
tions.
Do not reset the Tire Pressure Monitor TPM af‐
ter mounting snow chains, as doing so may re‐
sult in incorrect readings.
When driving with snow chains, activate the
Sport program with the selector lever. This en‐
sures that the rear wheels are being powered.
Warning
When driving with snow chains, briefly activate
Dynamic Traction Control DTC, if needed.
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.
Maximum speed with snow chains
Do not exceed a speed of 30 mph/50 km/h when
using snow chains.
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.
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.
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.
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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
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.
On a level surface
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.
Place chocks or other suitable objects, for exam‐
ple a rock, in front of and behind the wheel that is
diagonally opposite to the wheel that you wish to
change.
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.
On a slight downhill gradient
Warning
Incorrect handling of the vehicle jack can dam‐
age the vehicle's underbody and expose high-
voltage components. There is a risk of injury or
risk of damage to property. When cranking up
the vehicle jack, ensure that it is inserted in the
jacking point next to the wheel housing. Make
sure not to damage any of the underbody pan‐
eling parts.
If you need to change a wheel on a slight down‐
hill grade, place chocks and other suitable ob‐
jects, for instance a rock, under the wheels of
both the front and rear axles against the rolling
direction.
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▷ Set the parking brake.
Lug bolt lock
Concept
▷ Engage a gear or move the selector lever to
position P.
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
▷ 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
▷ Depending on the vehicle equipment, get
wheel change tools and, if necessary, the
emergency wheel from the vehicle.
The adapter for the lug bolt lock is stored behind
the left side trim in the cargo area.
▷ 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
▷ Lug bolt, arrow 1.
▷ Adapter, arrow 2.
Unscrewing
1. Attach the adapter to the lug bolt.
2. Unscrew the lug bolt.
3. Remove the adapter after unscrewing the lug
bolt.
The jacking points for the vehicle jack are lo‐
cated at the indicated positions.
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.
Preparing the vehicle
▷ Park the vehicle on solid and non-slip ground
at a safe distance from traffic.
▷ Switch on the hazard warning system.
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5. Make sure that the vehicle jack foot stands
vertically and at a right angle beneath the
jacking point.
Jacking up the vehicle
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.
1. Hold the vehicle jack with one hand, arrow 1,
and grasp the vehicle jack crank with your
other hand, arrow 2.
6. Make sure that the vehicle jack foot stands
vertically and perpendicularly beneath the
jacking point after extending the vehicle jack.
2. Place the vehicle jack centered below the
plastic rail that is closest to the wheel to be
changed.
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.
3. Extend the vehicle jack by turning the vehicle
jack crank or lever clockwise.
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.
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.
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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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.
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.
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