Tire bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
tire bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
part and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, a roof rack
or a high-performance battery, are not
included in the unladen weight and the weight
of the accessories.
TIN (Tire Identification Number)
A unique identification number which can be
used by a tire manufacturer to identify tires,
for example for a product recall, and thus
identify the purchasers. The TIN is made up
of the manufacturer's identity code, tire size,
tire type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
Wear indicator
This is indicated by narrow bars (tread wear
bars) that are distributed over the tire tread.
If the tire tread is level with the bars, the wear
limit of 1
/ 16 in (1.6 mm) has been reached.
Distribution of the vehicle occupants
This is the distribution of vehicle occupants
over designated seat positions in a vehicle.
Maximum permissible payload
weight
Nominal load and luggage load plus
68 kilograms (150 lb) multiplied by the
number of seats in the vehicle.
Changing a wheel
Flat tire
The "Breakdown assistance" section
( Y page 463) contains information and notes
on how to deal with a flat tire. It also provides
instructions on changing a wheel or installing
the spare wheel or emergency spare wheel.
Interchanging the wheels
GWarning
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs. rear),
tire rotation is not possible.
GWarning!
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
Only use genuine Mercedes-Benz wheel bolts
specified for your vehicle’s rims.
502Changing a wheelTires and wheels
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If no
warranty book is available, the tires should be
rotated every 3000 to 6000 miles
(5000 to 10000 km), or earlier if tire wear
requires. Do not change the direction of
wheel rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tire pressures.
Information on changing a wheel and fitting
the spare wheel ( Y page 463).
! On vehicles installed with a tire pressure
monitor, electronic components are
located in the wheel.
Tire-mounting tools should not be applied
in the area of the valve, as this could
damage the electronic components.
Always have the tires changed at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of hydroplaning. You will only gain these
benefits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
You may install an emergency spare wheel/
spare wheel against the direction of rotation.
Observe the time restriction on use as well as
the speed limitation specified on the
emergency spare wheel/spare wheel.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from contact with oil, grease and fuel.
Cleaning the wheels
GWarning
Do not use power washers with circular jet
nozzles (concentrated-power jets) to clean
your vehicle, especially for cleaning tires. You
could otherwise damage the tires and cause
an accident.
Wheel/tire combinations
Points to remember
GWarning
Observe the "Important safety notes"
( Y page 480).
! For safety reasons, Mercedes-Benz
recommends that you only use tires,
wheels and accessories which have been
approved by Mercedes-Benz specifically
for your vehicle.
These tires have been specially adapted for
use with the control systems, such as ABS
or ESP ®
, and are marked as follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(tires with run-flat characteristics)
R MO1 = Mercedes-Benz Original (only
certain AMG tires)
Mercedes-Benz Original Extended tires
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tires, wheels or accessories
tested and approved by Mercedes-Benz.
Certain characteristics, e.g. handling,
vehicle noise emissions or fuel
consumption, may otherwise be adversely
affected. In addition, when driving with a
Wheel/tire combinations503Tires and wheelsZ
TiresSummer tiresAlloy wheelsV1V2V3V4BA255/45 R18 99 Y
MOExtended 378.5 J x 18 H2
Wheel offset: 1.69 in. (43 mm)—#——BA255/35 ZR20 XL 388.5 J x 20 H2
Wheel offset: 1.69 in. (43 mm)—#——FA255/45 R18 99 Y
MOExtended 378.5 J x 18 H2
Wheel offset: 1.69 in. (43 mm)#—#—RA275/45 R18 103 Y
MOExtended 37,
389.5 J x 18 H2
Wheel offset: 1.69 in. (43 mm)FA255/40 ZR19 XL8.5 J x 19 H2
Wheel offset: 1.69 in. (43 mm)———#RA275/40 ZR19 XL 389.5 J x 19 H2
Wheel offset: 1.69 in. (43 mm)FA255/35 ZR20 XL8.5 J x 20 H2
Wheel offset: 1.69 in. (43 mm)#—##RA275/35 ZR20 XL 389.5 J x 20 H2
Wheel offset: 1.69 in. (43 mm)All-weather tiresAlloy wheelsV1V2V3V4BA255/45 R18 99 H M+S8.5 J x 18 H2
Wheel offset: 1.69 in. (43 mm)##——BA255/40 R19 100 V XL M+S8.5 J x 19 H2
Wheel offset: 1.69 in. (43 mm)—#——FA255/45 R18 99 H M+S8.5 J x 18 H2
Wheel offset: 1.69 in. (43 mm)#—#—RA275/45 R18 103 H M+S 389.5 J x 18 H2
Wheel offset: 1.69 in. (43 mm)FA255/40 R19 100 V XL M+S8.5 J x 19 H2
Wheel offset: 1.69 in. (43 mm)#—#—RA275/40 R19 101 V M+S 389.5 J x 19 H2
Wheel offset: 1.69 in. (43 mm)37 Tires with run-flat characteristics: only in combination with an activated tire pressure monitor.
38 Use of snow chains is not permitted. Observe the notes in the section on snow chains.Wheel/tire combinations505Tires and wheelsZ
