2017-2023 BMW M5 4 Door MOBILITY -> Wheels and tires User Manual
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MOBILITY -> Wheels and tires for Your BMW M5 4 Door Sixth Generation (2017-2023)

Wheels and tires  
MOBILITY  
Wheels and tires  
Tire pressure specifications  
In the tire inflation pressure table  
Vehicle features and  
options  
The tire inflation pressure table, refer to  
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.  
page 318, 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 speed for driving.  
Tire pressure  
On the Control Display  
The current tire inflation pressure values for the  
mounted tires can be displayed on the Control  
Display.  
General information  
The tire characteristics and tire pressure influ‐  
ence the following:  
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.  
▷ The service life of the tires.  
▷ Driving safety.  
The current tire inflation pressure value is lo‐  
cated on each tire.  
▷ Driving comfort.  
▷ Fuel consumption.  
Checking the tire pressure  
General information  
Tires heat up while driving. The tire pressure in‐  
creases with the tire 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.  
Tires have a natural, consistent tire pressure  
loss.  
The displays of inflation devices may under-read  
by up to 0.1 bar/2 psi.  
318  
 
Wheels and tires  
MOBILITY  
The corrected tire inflation pressures are applied  
automatically. Make sure that the correct tire set‐  
tings have been made.  
Checking using tire inflation  
pressure specifications in the tire  
inflation pressure table  
With tires that cannot be found in the tire pres‐  
sure values on the Control Display, reset the Tire  
Pressure Monitor TPM.  
1. Determine the intended tire inflation pressure  
levels for the mounted tires.  
2. Check the tire inflation pressure in all four  
tires, using a pressure gage, for example.  
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 val‐  
ues in the tire inflation pressure table and adjust  
as necessary.  
3. Correct the tire inflation pressure if the actual  
tire inflation pressure deviates from the in‐  
tended tire inflation pressure.  
4. Check whether all valve caps are screwed  
onto the tire valves.  
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.  
Only check the tire inflation pressure levels when  
the tires are cold, i.e.:  
▷ A 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.  
These pressure values can also be found on the  
tire pressure label on the driver's door pillar.  
Checking using the tire inflation  
pressure specifications on the  
Control Display  
Do not exceed a speed of 100 mph/160 km/h.  
Tire pressure values up to  
100 mph/160 km/h  
1. "CAR"  
2. "Vehicle status"  
3.  
"Tire Pressure Monitor"  
M5  
4. Check whether the current tire inflation pres‐  
sure levels deviate from the intended tire  
pressure value.  
Tire size  
Pressure specifica‐  
tions in bar/PSI  
5. 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  
After correcting the tire pressure  
With runflat tires:  
265/40 R 19 102  
V M+S XL  
2.3 / 33  
2.3 / 33  
-
Reinitialize the Flat Tire Monitor.  
With Tire Pressure Monitor:  
Front: 265/40 R 19 2.3 / 33  
102 V M+S XL  
319  
 
Wheels and tires  
MOBILITY  
Tire size  
Tire inflation pressures at max.  
speeds above 100 mph/160 km/h  
Pressure specifica‐  
tions in bar/PSI  
Rear: 285/40 R 19  
107 V M+S XL  
-
2.3 / 33  
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.  
F: 275/40 ZR 19  
105Y XL  
2.4 / 35  
-
R: 285/40 ZR 19  
107Y XL  
-
2.4 / 35  
-
F: 275/35 ZR 20  
102Y XL  
2.2 / 32  
-
For speeds over 100 mph/160 km/h and for opti‐  
mum driving comfort, note the pressure values in  
the tire inflation pressure table and adjust as nec‐  
essary.  
R: 285/35 ZR 20  
104Y XL  
2.3 / 33  
M5 CS  
Tire pressure values over  
100 mph/160 km/h  
Tire size  
Pressure specifications  
in bar/PSI  
M5  
Specifications in  
bar/PSI with cold  
tires  
Without M Driver’s Package:  
Tire size  
Pressure specifica‐  
tions in bar/PSI  
265/40 R 19  
102 V XL M+S  
2.3 / 33  
2.2 / 32  
-
2.3 / 33  
Specifications in  
bar/PSI with cold  
tires  
Front: 275/35  
ZR 20 102 Y XL  
-
265/40 R 19 102  
V M+S XL  
2.6 / 38  
2.6 / 38  
Rear: 285/35 ZR  
20 104 Y XL  
2.3 / 33  
-
Front: 265/40 R 19 2.6 / 38  
102 V M+S XL  
-
Front: 265/40 R 2.3 / 33  
19 102 V XL M  
+S  
Rear: 285/40 R 19  
107 V M+S XL  
-
2.6 / 38  
-
Rear: 285/40 R  
19 107 V XL M  
+S  
-
2.3 / 33  
F: 275/40 ZR 19  
105Y XL  
2.5 / 36  
-
R: 285/40 ZR 19  
107Y XL  
2.5 / 36  
320  
 
Wheels and tires  
MOBILITY  
M5 CS  
Tire size  
Pressure specifica‐  
tions in bar/PSI  
Tire size  
Pressure specifications  
in bar/PSI  
F: 275/35 ZR 20  
102Y XL  
2.4 / 35  
-
Specifications in  
bar/PSI with cold  
tires  
R: 285/35 ZR 20  
104Y XL  
-
2.5 / 36  
With M Driver’s Package:  
265/40 R 19  
102 V XL M+S  
2.6 / 38  
3.0 / 44  
-
2.6 / 38  
Tire size  
Pressure specifica‐  
tions in bar/PSI  
Front: 275/35  
ZR 20 102 Y XL  
-
Specifications in  
bar/PSI with cold  
tires  
Rear: 285/35 ZR  
20 104 Y XL  
3.1 / 45  
-
Front: 265/40 R 2.6 / 38  
19 102 V XL M  
+S  
265/40 R 19 102  
V M+S XL  
2.6 / 38  
2.6 / 38  
Front: 265/40 R 19 2.6 / 38  
102 V M+S XL  
-
Rear: 285/40 R  
19 107 V XL M  
+S  
-
2.6 / 38  
Rear: 285/40 R 19  
107 V M+S XL  
-
2.6 / 38  
F: 275/40 ZR 19  
105Y XL  
2.7 / 39  
-
Tire marking  
R: 285/40 ZR 19  
107Y XL  
-
2.7 / 39  
-
Tire size  
245/45 R 18 96 Y  
F: 275/35 ZR 20  
102Y XL  
3.0 / 44  
-
245: nominal width in mm  
45: aspect ratio in %  
R: radial tire code  
R: 285/35 ZR 20  
104Y XL  
3.1 / 45  
18: rim diameter in inches  
96: load bearing capacity  
Y: speed code letter  
ZR tires: reinforced radial tire for speeds exceed‐  
ing 150 mph/240 km/h  
Maximum tire load  
Maximum tire load is the maximum permissible  
weight for which the tire is approved.  
321  
 
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 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.  
Designation  
Manufacture date  
DOT … 1921  
19th week 2021  
Uniform Tire Quality Grading  
Quality grades can be found where applicable on  
the tire sidewall between tread shoulder and  
maximum section width.  
Speed letter  
E.g.: Treadwear 200; Traction AA; Temperature  
A
Designation  
Maximum speed  
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  
DOT Quality Grades  
Treadwear  
Traction AA A B C  
Temperature A B C  
S
T
All passenger vehicle tires must conform to Fed‐  
eral Safety Requirements in addition to these  
grades.  
H
V
W
Y
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.  
(Y)  
Tire Identification Number  
DOT Code: DOT xxxx xxx 1921  
xxxx: manufacturer code for the tire brand  
xxx: tire size and tire design  
1921: tire age  
Tires with DOT codes meet the guidelines of the  
U.S. Department of Transportation.  
Traction  
The traction grades, from highest to lowest, are  
AA, A, B, and C.  
Tire age  
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.  
Recommendation  
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  
322  
 
Wheels and tires  
MOBILITY  
does not include acceleration, cornering, hydro‐  
planing, or peak traction characteristics.  
Minimum tread depth  
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 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.  
Wear indicators are distributed around the tire  
circumference. These wear indicators have the  
legally required minimum height of  
0.063 in/1.6 mm.  
The positions of the wear indicators are marked  
on the tire sidewall with TWI, Tread Wear Indica‐  
tor.  
Warning  
Tire damage  
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.  
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 depth of less than  
0.12 in/3 mm, otherwise there is an increased  
risk of aquaplaning.  
▷ 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:  
323  
 
Wheels and tires  
MOBILITY  
▷ Driving over curbs.  
▷ Road damage.  
Approved wheels and tires  
General information  
The following properties are recommended and  
approved by the manufacturer of the vehicle for  
the approved wheels and tires per vehicle type  
and special equipment:  
▷ Tire pressure too low.  
▷ Vehicle overloading.  
▷ Incorrect tire storage.  
Safety information  
▷ Wheel and tire combinations.  
▷ Rim designs.  
Warning  
▷ Tire sizes.  
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.  
▷ Tire brands.  
You can ask a manufacturer service center or an‐  
other qualified service center or repair shop  
about the approved wheels and tires for the vehi‐  
cle and the special equipment.  
Safety information  
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.  
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 may be a  
risk of accident and risk of damage to property.  
If possible, avoid driving over objects or road  
conditions that may damage tires, or drive over  
them slowly and carefully.  
Warning  
Mounted steel wheels can cause technical  
problems, for instance unexpected loosening of  
the lug bolts and damage to the brake discs.  
There is a risk of accident. Do not mount steel  
wheels.  
Changing wheels and tires  
Mounting and wheel balancing  
Have mounting and wheel balancing carried out  
by a dealer’s service center or another qualified  
service center or repair shop.  
324  
 
Wheels and tires  
MOBILITY  
Retreaded tires  
Warning  
Incorrect wheel/tire combinations will impair the  
vehicle's handling characteristics and a variety  
of system functions, such as the Antilock Brak‐  
ing System (ABS) or Dynamic Stability Control.  
There is a risk of accident. To maintain good  
handling and vehicle response, use only tires  
with a single tread configuration from a single  
manufacturer. The manufacturer of the vehicle  
recommends that you use wheels and tires that  
have been recommended by the vehicle manu‐  
facturer for your vehicle type. Following tire  
damage, have the original wheel/tire combina‐  
tion remounted on the vehicle as soon as pos‐  
sible.  
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  
General information  
Winter tires are recommended for operating on  
winter roads.  
Recommended tire brands  
Although so-called all-season tires with M+S  
identification provide better winter traction than  
summer tires, they usually do not provide the  
same level of performance as winter 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 vision. The label is  
available from a dealer's service center or an‐  
other qualified service center or repair shop.  
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.  
With winter tires mounted, observe and do not  
exceed the permissible maximum speed.  
Rotating wheels between axles  
New tires  
Tire traction is not optimal due to production-re‐  
lated circumstances when tires are brand-new.  
Warning  
Drive conservatively for the first  
200 miles/300 km.  
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.  
325  
 
Wheels and tires  
MOBILITY  
▷ From a dealer’s service center or another  
qualified service center or repair shop.  
Storing tires  
Tire pressure  
▷  
Do not exceed the maximum tire inflation pres‐  
sure indicated on the tire sidewall.  
Safety information  
Storage  
Warning  
▷ Store wheels and tires in a cool, dry and dark  
place.  
At temperatures below 14 ℉/-10 ℃, the sport  
tires can become damaged, for instance torn  
and broken. There may be a risk of accident or  
risk of damage to property. Do not move,  
mount, or drive on sport tires at temperatures  
below 14 ℉/-10 ℃.  
▷ Always protect tires against all contact with  
oil, grease, and solvents.  
▷ Do not leave tires in plastic bags.  
▷ Remove dirt from wheels or tires.  
Storage  
Repairing a flat tire  
If the sport tires are not used for a long period of  
time, we recommend removing the wheels from  
the vehicle and lowering the tire inflation pres‐  
sure to half the level specified by the manufac‐  
turer.  
Safety measures  
▷ Park the vehicle as far away as possible from  
passing traffic and on solid ground.  
▷ Turn on the hazard warning system.  
Store wheels or sport tires in a clean, dry, and  
dark place at temperatures above 32 ℉/0 ℃.  
▷ Secure the vehicle against rolling away by  
setting the parking brake.  
Use on the road  
The sport tires meet the legal regulations for use  
on public roads.  
▷ Turn the steering wheel until the front wheels  
are in the straight-ahead position and engage  
the steering wheel lock.  
▷ Have all vehicle occupants get out of the ve‐  
hicle and ensure that they remain outside the  
hazardous area in a safe place, such as be‐  
hind a guardrail.  
After being used on a racetrack, the sport tires  
may no longer be suitable for road use. There‐  
fore, after they have been used on a racetrack,  
check the sport tires against the legal regulations  
for use on public roads, for instance the mini‐  
mum tread depth.  
▷ If necessary, set up a warning triangle at an  
appropriate distance.  
Use on a racetrack  
General information  
M5 CS Sport tires  
Inspect the sport tires for damage, foreign ob‐  
jects lodged in the tread, and tread wear every  
time before using them on a racetrack.  
General information  
The vehicle is fitted with sport tires, which have  
been optimized for use on a racetrack in dry con‐  
ditions.  
Bring the sport tires to the correct temperature  
for use on a racetrack. To do this, drive a few cir‐  
cuits with an appropriate driving style.  
More information on wheels and tires:  
326  
 
Wheels and tires  
MOBILITY  
After correcting the tire inflation pressure, carry  
out a reset of the Tire Pressure Monitor TPM.  
Intensive use  
After an extended period of intensive driving on a  
racetrack and driving over curbs or leaving the  
roadway, the sport tires can become damaged.  
Tire repair set  
Inspect the sport tires for damage, foreign ob‐  
jects lodged in the tread, and tread wear. The  
wheel must be removed in order to inspect the  
outside and inside of the sport tires. Have the  
sport tires checked by a dealer’s service center  
or another qualified service center or repair shop.  
Principle  
With the tire repair set, minor tire damage can be  
sealed temporarily to enable continued driving.  
General information  
▷ To enable continued driving, liquid sealant is  
pumped into the tire, which hardens and  
seals the damage from the inside.  
Tire pressure  
General information  
Check the tire inflation pressure regularly and  
correct it if necessary, taking the regulations for  
use on the road or a racetrack into account.  
▷ Follow the instructions on using the tire repair  
set found on the compressor and sealant  
bottle.  
▷ Use of the tire repair set may be ineffective if  
the tire puncture measures approx. 4 mm or  
more.  
Tire pressure specifications  
The tire inflation pressure table contains all tire  
inflation pressure specifications for the specified  
tire sizes at the ambient temperature. The tire in‐  
flation pressure values apply to tire sizes ap‐  
proved by the manufacturer of the vehicle for the  
vehicle type.  
▷ 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. Remove foreign objects only  
when they are visibly protruding from the tire.  
To identify the correct tire inflation pressure,  
please note the following:  
▷ Pull the speed limit sticker off the sealant bot‐  
tle and apply it to the steering wheel.  
▷ Tire sizes of your vehicle.  
▷ Maximum speed for driving.  
▷ The use of a sealing compound can damage  
the wheel electronics. In this case, have the  
electronics checked and replaced at the next  
opportunity.  
Use on a racetrack  
The tires heat up while driving. The tire pressure  
increases with the tire temperature.  
▷ The compressor can be used to check the  
tire inflation pressure.  
After a period of intensive driving, correct the tire  
inflation pressure in the heated tires to the tire in‐  
flation pressure values specified by the vehicle  
manufacturer.  
After they have been used on a racetrack, allow  
the tires to cool down for at least 2 hours. Cor‐  
rect the tire inflation pressure of the cold tires to  
the tire inflation pressure values specified by the  
vehicle manufacturer.  
327  
 
Wheels and tires  
MOBILITY  
Overview  
Storage  
3
4
5
6
7
8
Tire pressure display  
Reduce tire inflation pressure button  
On/off switch  
Compressor  
Connector/cable for socket  
Connection hose  
Safety measures  
▷ Park the vehicle as far away as possible from  
passing traffic and on solid ground.  
▷ Turn on the hazard warning system.  
Storage for the tire repair set is provided in the  
left storage compartment of the trunk.  
▷ 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.  
Sealant bottle  
▷ Have all vehicle occupants get out of the ve‐  
hicle and ensure that they remain outside the  
hazardous area in a safe place, such as be‐  
hind a guardrail.  
▷ If necessary, set up a warning triangle at an  
appropriate distance.  
Filling the tire with sealing  
compound  
▷ Sealant bottle, arrow 1.  
▷ Filler hose, arrow 2.  
Observe expiration date on the sealant bottle.  
Safety information  
Compressor  
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.  
1
2
Sealant bottle unlocking  
Sealant bottle holder  
328  
 
Wheels and tires  
MOBILITY  
4. Screw the filler hose of the sealant bottle  
onto the tire valve of the nonworking wheel.  
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 bottle.  
5. With the compressor switched off, insert the  
connector into the power socket in the vehi‐  
cle interior.  
2. Pull filler hose completely out of the cover of  
the sealant bottle. Do not kink the hose.  
6. With standby state or drive-ready state  
switched on, switch on the compressor.  
3. Slide the sealant bottle into the holder on the  
compressor housing, ensuring that it en‐  
gages audibly.  
Let the compressor run for max. 10 minutes to fill  
the tire with sealing compound and achieve a tire  
inflation pressure of approx. 2.0 bar.  
While the tire is being filled with sealing com‐  
pound, the tire inflation pressure may sporadi‐  
cally reach approx. 5 bar. Do not switch off the  
compressor in this phase.  
329  
 
Wheels and tires  
MOBILITY  
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 pressure on the tire pressure  
display.  
To continue the trip, a tire inflation pressure of at  
least 2 bar must be reached.  
Removing and stowing the sealant  
bottle  
1. Unscrew the filler hose of the sealant bottle  
from the tire valve.  
5. With standby or drive readiness turned on,  
turn on the compressor and let it run for a  
maximum of 10 minutes.  
When the tire pressure does not reach at  
least 2 bar, contact a manufacturer service  
center or another qualified service center or  
repair shop.  
2. Press the red unlocking device.  
3. Remove the sealant bottle from the compres‐  
sor.  
When a tire pressure of at least 2 bar is  
reached, see Minimum tire inflation pressure  
is reached.  
4. Wrap and store the sealant bottle in suitable  
material to avoid contamination of the cargo  
area.  
6. Unscrew the connection hose of the com‐  
pressor from the tire valve.  
Minimum tire inflation pressure is  
not reached  
1. Pull the connector out of the power socket in  
the vehicle interior.  
7. Pull the connector out of the power socket in  
the vehicle interior.  
8. Stow the tire repair set in the vehicle.  
2. Drive 33 ft/10 m forward and back to distrib‐  
ute the sealing compound in the tire.  
Minimum tire inflation pressure is  
reached  
1. Unscrew the connection hose of the com‐  
pressor from the tire valve.  
3. Screw the connection hose of the compres‐  
sor directly onto the tire valve stem.  
2. Pull the connector out of the power socket in  
the vehicle interior.  
3. Stow the tire repair set in the vehicle.  
4. Immediately drive approx. 5 miles/10 km to  
ensure that the sealing compound is evenly  
distributed in the tire.  
Do not exceed a speed of 50 mph/80 km/h.  
If possible, do not drive at speeds less than  
12 mph/20 km/h.  
330  
 
Wheels and tires  
MOBILITY  
Reset the Tire Pressure Monitor again.  
Adjustment  
Replace the faulty tire and the sealant bottle of  
the tire repair set promptly.  
1. Stop at a suitable location.  
2. Screw the connection hose of the compres‐  
sor directly onto the tire valve stem.  
Additional information:  
▷ Run-flat tires, refer to page 337.  
▷ Tire pressure monitor, refer to page 332.  
Tire chains  
Safety information  
Warning  
3. Insert the connector into the power socket in  
the vehicle interior.  
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.  
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.  
4. Correct the tire inflation pressure to at least  
2.0 bar:  
▷ Increase tire pressure: with standby or  
drive readiness turned on, turn on the  
compressor and let it run for a maximum  
of 10 minutes.  
▷ Reduce tire inflation pressure: press the  
button on the compressor.  
Fine-link tire chains  
5. Unscrew the connection hose of the com‐  
pressor from the tire valve.  
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.  
6. Pull the connector out of the power socket in  
the vehicle interior.  
7. Stow the tire repair set in the vehicle.  
Information regarding suitable tire chains is avail‐  
able from a dealer’s service center or another  
qualified service center or repair shop.  
Continuing the trip  
Do not exceed the permissible maximum speed  
of 50 mph/80 km/h.  
Reinitialize the Flat Tire Monitor.  
331  
 
Wheels and tires  
MOBILITY  
When operating the system, also note the infor‐  
mation found in the Tire inflation pressure chap‐  
ter.  
Use  
Use only in pairs on the rear wheels, equipped  
with the tires of the following size:  
Additional information:  
▷ 265/40 R 19.  
Tire inflation pressure, refer to page 318.  
The wheel size and rim offset are located on the  
inside of the wheel.  
Safety information  
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.  
Warning  
Incorrect entries in the tire settings can lead to  
incorrect target tire inflation pressure values. In  
this case, it cannot be guaranteed that the noti‐  
fication of a tire pressure loss will be reliable.  
There is a risk of injury and risk of damage to  
property. Ensure that the tire sizes of the  
mounted tires are displayed correctly and  
match the details on the tires and on the vehi‐  
cle.  
Do not reset the Tire Pressure Monitor after  
mounting tire chains, as doing so may result in  
incorrect readings.  
When driving with tire chains, briefly activate Dy‐  
namic Traction Control DTC to optimize the  
drive power.  
Maximum speed with tire chains  
Do not exceed a speed of 30 mph/50 km/h when  
using tire chains.  
Functional requirements  
The following conditions must be met for the  
system; otherwise, reliable message of a tire  
pressure loss is not assured:  
Tire pressure monitor  
▷ Every time a tire or wheel is changed, the  
correct details on the mounted tires must be  
entered in the tire settings.  
Principle  
The Tire Pressure Monitor monitors the tire  
pressure and issues a warning if the tire pressure  
has dropped.  
▷ The Tire Pressure Monitor does not activate  
until after driving for a few minutes:  
▷ After a tire or wheel replacement.  
General information  
Sensors in the tire valves measure the tire infla‐  
tion pressure and tire temperature.  
▷ After a reset, for tires with special appro‐  
val.  
▷ After changing the tire setting.  
▷ For tires with special approval:  
Using the tire settings in iDrive, the system can  
automatically compare the predefined target  
pressures with the actual tire inflation pressures.  
▷ After a tire or wheel replacement, a reset  
was performed with the correct tire infla‐  
tion pressure.  
If tires are being used that are not specified on  
the tire inflation pressure details on the vehicle,  
such as tires with special approval, the system  
needs to be actively reset. The system will then  
take over the actual tire inflation pressures as the  
target pressures.  
▷ After the tire inflation pressure was ad‐  
justed to a new value, a reset was per‐  
formed.  
▷ Wheels with wheel electronics.  
332  
 
Wheels and tires  
MOBILITY  
Tire settings  
Status display  
Current status  
General information  
The tire sizes of the mounted tires can be gath‐  
ered from the tire inflation pressure details on the  
vehicle or directly on the tires.  
The system status can be displayed on the Con‐  
trol Display, e.g., whether or not the system is ac‐  
tive.  
The tire details do not need to be re-entered  
when the tire pressure is corrected.  
1. "CAR"  
2. "Vehicle status"  
For summer and winter tires, the tire details en‐  
tered last are stored. After a tire or wheel re‐  
placement, the settings of the tire sets used last  
can be selected.  
3.  
"Tire Pressure Monitor"  
The current status is displayed.  
Current tire pressure  
Changing settings  
1. "CAR"  
The current tire pressure is displayed for each  
tire.  
The current tire inflation pressures may change  
during driving or depending on the outside tem‐  
perature.  
2. "Vehicle status"  
3.  
"Tire Pressure Monitor"  
4. "Tire settings"  
5. "Tire selection"  
6. "Manual"  
Current tire temperature  
The current tire temperatures are displayed.  
7. "Tire type"  
The current tire temperatures may change while  
driving or due to the outside temperature.  
▷ "Summer"  
▷ "Winter/All-year"  
Tire conditions  
8. Select the tire type that is mounted on the  
rear axle.  
General information  
For tires with special approval:  
"Other tires/raceway"  
Tire and system status are indicated by the color  
of the wheels and a text message on the Control  
Display.  
Observe further proceeding in the perform a  
reset section.  
Any existing messages may not be deleted if the  
target pressure is not reached after the tire infla‐  
tion pressure is corrected.  
9. Select the maximum road speed that will be  
used with the tires.  
10."Save tire settings"  
All wheels green  
▷ The system is active and bases warnings on  
the target pressures.  
The measurement of the current tire inflation  
pressure is started. The measurement progress  
is displayed.  
▷ For tires with special approval: the system is  
active and bases warnings on the tire inflation  
pressures stored during the last reset.  
333  
 
Wheels and tires  
MOBILITY  
One to four yellow wheels  
A flat tire or major tire pressure loss has occurred  
in the indicated tires.  
Messages: for tires without  
special approval  
General information  
A low tire inflation pressure may cause the DSC  
Dynamic Stability Control to be switched 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 missing tire  
inflation pressure impacts handling, such as  
steering and braking response. There is a risk  
of accident. Do not continue driving. Repair the  
flat tire or replace the wheel.  
▷ For tires with special approval: a reset is per‐  
formed for the system.  
For tires with special approval:  
perform a reset  
1. "CAR"  
If a tire inflation pressure check is  
required  
2. "Vehicle status"  
3. "Tire Pressure Monitor"  
Message  
4. Make sure that correct tire settings have  
been made.  
An icon with a Check Control message appears  
on the Control Display.  
Tire settings, refer to page 333.  
Icon Possible cause  
5. Turn on drive-ready state and do not drive  
off.  
Inflation was not carried out according  
to specifications, for instance when the  
tire has not been sufficiently inflated or  
in the case of a natural steady tire pres‐  
sure loss.  
6. Reset tire pressure: "Perform reset".  
7. Drive away.  
The wheels are displayed in gray and the follow‐  
ing is displayed "Resetting tire pressure…".  
After a travel time of several minutes, the set tire  
inflation pressures are accepted as the prede‐  
fined tire inflation pressures. The reset is com‐  
pleted automatically while driving.  
Measure  
Check the tire pressure and correct as needed.  
If the tire inflation pressure is too  
low  
After a successfully completed reset, the wheels  
on the Control Display are shown in green and  
the following is displayed: "Reset successful."  
Message  
You may interrupt this trip at any time. When you  
continue the reset resumes automatically.  
A yellow warning light is illuminated in  
the instrument cluster.  
In addition, an icon with a Check Control mes‐  
sage appears on the Control Display.  
334  
 
Wheels and tires  
MOBILITY  
Safety information  
Icon  
Possible cause  
There is a tire pressure loss.  
Warning  
A damaged regular tire with low or missing tire  
inflation pressure impacts handling, such as  
steering and braking response. There is a risk  
of accident. Do not continue driving. Repair the  
flat tire or replace the wheel.  
Measure  
1. Reduce the vehicle speed. Do not exceed a  
speed of 80 mph/130 km/h.  
2. At the next opportunity, for instance at a filling  
station, check the tire inflation pressure in all  
four tires and correct if necessary.  
If a tire inflation pressure check is  
required  
If there is a significant tire pressure  
loss  
Message  
An icon with a Check Control message appears  
on the Control Display.  
Message  
Icon  
Possible cause  
A yellow warning light is illuminated in  
the instrument cluster.  
Inflation was not carried out accord‐  
ing to specifications, e.g., the tire has  
not been sufficiently inflated.  
In addition, an icon with the affected tire appears  
in a Check Control message on the Control Dis‐  
play.  
The system has detected a wheel  
change, but no reset was done.  
Icon Possible cause  
The tire inflation pressure has fallen  
below the level of the last reset.  
There is a flat tire or a major tire pres‐  
sure loss.  
No reset was performed for the sys‐  
tem. The system issues a warning  
based on the tire inflation pressures  
stored during the last reset.  
Measure  
1. Reduce your speed and stop cautiously.  
Avoid sudden braking and steering maneu‐  
vers.  
Measure  
1. Check the tire pressure and correct as  
needed.  
2. Read the description on What to do in case of  
a flat tire.  
2. Perform a system reset.  
Actions in the event of a flat tire, refer to  
page 336.  
If the tire inflation pressure is too  
low  
Messages: for tires with special  
approval  
Message  
A yellow warning light is illuminated in  
the instrument cluster.  
General information  
A low tire inflation pressure may cause the DSC  
Dynamic Stability Control to be switched on.  
335  
 
Wheels and tires  
MOBILITY  
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 336.  
Icon Possible cause  
Actions in the event of a flat tire  
1. Identify the damaged tire.  
There is a tire pressure loss.  
No reset was performed for the sys‐  
tem. The system issues a warning  
based on the tire inflation pressures  
stored during the last reset.  
Check the tire pressure in all four tires, for in‐  
stance using the tire pressure display of a flat  
tire kit.  
For tires with special approval: if the tire pres‐  
sure in all four tires is correct, the Tire Pres‐  
sure Monitor may not have been reset. In this  
case, perform the reset.  
Measure  
1. Reduce the vehicle speed. Do not exceed a  
speed of 80 mph/130 km/h.  
If tire damage cannot be found, contact a  
dealer’s service center or another qualified  
service center or repair shop.  
2. At the next opportunity, for instance at a filling  
station, check the tire inflation pressure in all  
four tires and correct if necessary.  
2. Repair the flat tire, e.g., with a flat tire kit or by  
changing the wheel.  
3. Reset the system.  
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.  
If there is a significant tire pressure  
loss  
Message  
System limits  
Temperature  
The tire inflation pressure depends on the tire's  
temperature.  
A yellow warning light is illuminated in  
the instrument cluster.  
In addition, an icon with the affected tire appears  
in a Check Control message on the Control Dis‐  
play.  
Driving or exposure to the sun will increase the  
tire's temperature, thus increasing the tire infla‐  
tion pressure.  
Icon Possible cause  
There is a flat tire or a major tire pres‐  
sure loss.  
The tire inflation pressure is reduced when the  
tire temperature falls again.  
No reset was performed for the sys‐  
tem. The system issues a warning  
based on the tire inflation pressures  
stored during the last reset.  
These circumstances may cause a warning  
when temperatures fall very sharply.  
Sudden tire pressure loss  
The system cannot indicate sudden serious tire  
damage caused by external circumstances.  
Measure  
1. Reduce your speed and stop cautiously.  
Avoid sudden braking and steering maneu‐  
vers.  
Failure performing a reset  
Tires with special approval: the system will not  
function correctly if a reset was not performed,  
2. Read the description on What to do in case of  
a flat tire.  
336  
 
Wheels and tires  
MOBILITY  
for example a flat tire may be indicated although  
the tire inflation pressures are correct.  
ingly, when the low tire pressure telltale illumi‐  
nates, 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 effi‐  
ciency and tire tread life, and may affect the vehi‐  
cle'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 illu‐  
mination of the TPMS low tire pressure telltale.  
Your vehicle has also been equipped with a  
TPMS malfunction indicator to indicate when the  
system is not operating properly. The TPMS  
malfunction indicator is combined with the low  
tire pressure telltale. When the system detects a  
malfunction, the telltale will flash for approxi‐  
mately one minute and then remain continuously  
illuminated. This sequence will continue upon  
subsequent vehicle start-ups as long as the mal‐  
function exists. When the malfunction indicator is  
illuminated, the system may not be able to de‐  
tect or signal low tire pressure as 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 functioning properly. Al‐  
ways check the TPMS malfunction telltale after  
replacing one or more tires or wheels on your ve‐  
hicle to ensure that the replacement or alternate  
tires and wheels allow the TPMS to continue to  
function properly.  
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.  
▷ Fault caused by systems or devices with the  
same radio frequency: after leaving the area  
of the interference, the system automatically  
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  
system checked by a manufacturer service  
center or another qualified service center or  
repair shop.  
Declaration according to NHTSA/  
FMVSS 138 Tire Pressure  
Monitoring System  
Each tire, including the spare (if provided) should  
be checked monthly when cold and inflated to  
the inflation pressure recommended by the vehi‐  
cle manufacturer on the vehicle placard or tire in‐  
flation pressure label. (If your vehicle has tires of  
a different size than the size indicated on the ve‐  
hicle placard or tire inflation pressure label, you  
should determine the proper tire inflation pres‐  
sure for those tires.) As an added safety feature,  
your vehicle has been equipped with a tire pres‐  
sure monitoring system (TPMS) that illuminates  
a low tire pressure telltale when one or more of  
your tires is significantly under-inflated. Accord‐  
Flat Tire Monitor FTM  
Principle  
The Flat Tire display detects a tire pressure loss  
while driving and issues a warning if the tire pres‐  
sure has dropped.  
337  
 
Wheels and tires  
MOBILITY  
tire. Initialization is started by confirming the tire  
inflation pressures.  
General information  
The system detects tire pressure loss on the ba‐  
sis of rotation speed differences between the in‐  
dividual wheels while driving.  
Do not initialize the system when driving with tire  
chains.  
In the event of a tire pressure loss, the diameter  
and therefore the rotational speed of the corre‐  
sponding wheel changes. The difference will be  
detected and reported as a flat tire.  
1. "CAR"  
2. "Vehicle status"  
3. "Flat Tire Monitor"  
4. Turn on drive-ready state and do not drive  
off.  
The system does not measure the actual infla‐  
tion pressure in the tires.  
5. Start the initialization with: "Perform reset"  
6. Drive away.  
Functional requirements  
The following conditions must be met for the  
system; otherwise, reliable message of a tire  
pressure loss is not assured:  
The initialization is completed while driving,  
which can be interrupted at any time.  
The initialization automatically continues when  
driving continues.  
▷ After a tire or wheel replacement, an initializa‐  
tion was performed with the correct tire infla‐  
tion pressure.  
Messages  
▷ After the tire pressure was adjusted to a new  
value, an initialization was performed.  
General information  
When a flat tire is indicated, DSC Dynamic Sta‐  
bility Control is switched on, if needed.  
Status display  
The current status of the Flat Tire Monitor FTM  
can be displayed, for instance whether the FTM  
is active.  
Safety information  
Warning  
1. "CAR"  
A damaged regular tire with low or missing tire  
inflation pressure impacts handling, such as  
steering and braking response. There is a risk  
of accident. Do not continue driving. Repair the  
flat tire or replace the wheel.  
2. "Vehicle status"  
3.  
"Flat Tire Monitor"  
The status is displayed.  
Initialization required  
An initialization must be performed in the follow‐  
ing situations:  
Indication of a flat tire  
A yellow warning light is illuminated in  
the instrument cluster.  
▷ After the tire inflation pressure has been ad‐  
justed.  
▷ After a tire or wheel replacement.  
In addition, an icon with a Check Control mes‐  
sage appears on the Control Display.  
Performing initialization  
When initializing, the set tire inflation pressures  
serve as reference values in order to detect a flat  
338  
 
Wheels and tires  
MOBILITY  
Icon Possible cause  
There is a flat tire or a major tire pres‐  
Changing wheels/tires  
sure loss.  
General information  
When a flat tire kit is used, an immediate wheel  
change when there is a tire pressure loss in the  
event of a flat tire is not always necessary.  
Measure  
1. Reduce your speed and stop cautiously.  
Avoid sudden braking and steering maneu‐  
vers.  
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.  
Actions in the event of a flat tire  
1. Identify the damaged tire.  
Safety information  
To do this, check the tire pressure in all four  
tires, for instance using the tire pressure dis‐  
play of a flat tire kit.  
Warning  
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 injury 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.  
If the tire inflation pressure in all four tires is  
correct, the Flat Tire Monitor may not have  
been initialized. In this case, initialize the sys‐  
tem.  
If identification of flat tire damage is not pos‐  
sible, please contact a dealer’s 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.  
Warning  
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 injury or danger to life. Do not place  
supports under the vehicle jack.  
System limits  
The system could be delayed or malfunction in  
the following situations:  
▷ A natural, even tire pressure loss in all four  
tires will not be recognized. Therefore, check  
the tire inflation pressure regularly.  
▷ Sudden serious tire damage caused by exter‐  
nal circumstances cannot be recognized in  
advance.  
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  
▷ The system has not been initialized.  
▷ When driving on a snowy or slippery road.  
▷ Sporty driving style: slip on traction wheels,  
high lateral acceleration (drifting).  
▷ When driving with tire chains.  
339  
 
Wheels and tires  
MOBILITY  
an emergency or spare wheel in the event of a  
breakdown.  
Securing the vehicle against  
rolling  
General information  
Warning  
The vehicle manufacturer recommends to addi‐  
tionally secure the vehicle against rolling away  
when changing a wheel.  
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.  
On a level surface  
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.  
Place wheel chocks or other suitable objects in  
front and behind the wheel that is diagonal to the  
wheel to be changed.  
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.  
On a slight downhill gradient  
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.  
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.  
340  
 
Wheels and tires  
MOBILITY  
Lug bolt lock  
Principle  
Preparing the vehicle  
▷ Park the vehicle on solid and non-slip ground  
at a safe distance from traffic.  
The wheel lug bolts have a special coding. The  
lug bolts can only be released with the adapter  
which matches the coding.  
▷ Turn on the hazard warning system.  
▷ Set the parking brake.  
▷ Engage a gear or move the selector lever to  
position P.  
Overview  
▷ As soon as permitted by the traffic flow, have  
all vehicle occupants get out of the vehicle  
and ensure that they remain outside the haz‐  
ardous area in a safe place, such as behind a  
guardrail.  
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.  
▷ 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 port‐  
able hazard warning light at an appropriate  
distance.  
▷ Secure the vehicle additionally against rolling.  
▷ Loosen the lug bolts a half turn.  
▷ Lug lock bolt, arrow 1.  
▷ Adapter, arrow 2.  
Jacking points for the vehicle  
jack  
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  
1. Attach the adapter to the lug lock bolt. If nec‐  
essary, turn the adapter until it fits on the lug  
lock bolt.  
The jacking points for the vehicle jack are lo‐  
cated at the indicated positions.  
2. Screw on the lug lock bolt. The tightening  
torque is 101 lbs ft/140 Nm.  
3. Remove the adapter and stow it after screw‐  
ing on the lug bolt.  
341  
 
Wheels and tires  
MOBILITY  
3. Extend the vehicle jack by turning the vehicle  
jack crank or lever clockwise.  
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 or lever with  
your other hand, arrow 2.  
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.  
5. Make sure that the vehicle jack foot stands  
vertically and at a right angle beneath the  
jacking point.  
2. Insert the vehicle jack into the rectangular re‐  
cess of the jacking point closest to the wheel  
to be changed.  
6. Make sure that the vehicle jack foot stands  
vertically and perpendicularly beneath the  
jacking point after extending the vehicle jack.  
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.  
342  
 
Wheels and tires  
MOBILITY  
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.  
When non-original light-alloy wheels of the  
vehicle manufacturer are mounted, the ac‐  
companying 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.  
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.  
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 again.  
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.  
343  
 

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