
GAWR (Gross Axle Weight Rating)
The GAWR is the maximu mgross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side. Speed rating
The speed rating is part of the tire
identification. It specifies the speed range for
which the tire is approved. GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight, if
applicable.T he gross vehicle weight must not
exceed the gross vehicle weight rating GVWR
as specified on the vehicle identification plate
on the B-pillar on the driver's side. GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of
the vehicle including all accessories,
occupants, fuel, luggage and the drawbar
noseweight, if applicable). The gross vehicle
weight rating is specified on the vehicle
identification plate on the B-pillar on the
driver's side. Maximum loaded vehicle weight
The maximum weight is the sum of the curb
weight of the vehicle, the weight of the
accessories, the total load limit and the
weight of the optional equipment installed at
the factory. Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa
corresponds to 1 psi. Another unit for tire
pressure is bar. 100 kilopascals (kPa) are the
equivalent of 1bar. Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifie sthe load-bearing
capacity more precisely. Curb weight
The weight of a vehicle with standard
equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air-
conditioning system and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage. Maximum load rating
The maximum load rating in kilograms or
pounds is the maximum weight for which a
tire is approved. Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire. Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two. PSI (pounds per square inch)
As tandard uni tofmeasure for tire pressure. 332
Definition of terms for tires and loadingWheels and tires

Changing
awheel Flat tire
You can find information on wha tto do in the
event of a flat tire in the "Flat tire" section
(Y page 297).
Information on driving with MOExtended tires
in the event of a flat tire can be found under
"MOExtended tires (tires with run-flat
characteristics" (Y page 297).Rotating the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tires have different dimensions.
The wheel brakes or suspension components
may also be damaged. There is a risk of
accident.
Rotate front and rear wheels only if the wheels
and tires are of the same dimensions.
! On vehicles equipped with a tire pressure
monitor, electronic components are
located in the wheel.
Tire-mounting tools should not be used
near the valve. This could damage the
electronic components.
Only have tires changed at a qualified
specialist workshop.
Always observe the instructions and safety
notes in the "Mounting awheel" section
(Y page 334).
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 3,000 to 6,000 miles
(5,000 to
10,000 km), or earlier if tire wear requires. Do
not change the direction of wheel rotation.
Clean the contac tsurface softhe wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressures.
Information on changing tires and mounting
the spare wheel (Y page 334). 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
maintained.
An arrow on the sidewall of the tire indicates
its correct direction of rotation. Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel. Cleaning the wheels
G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately. Mounting
awheel Preparing the vehicle
X Stop the vehicle on solid, non-slippery and
level ground.
X Apply the parking brake. 334
Mounting
awheelWheels and tires

Lowering the vehicle
G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightene dto the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed. X
Turn the crank of the jack counter-
clockwise until the vehicle is once again
standing firmly on the ground.
X Place the jack to one side.
X Tighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated ( 0002to001F). The tightening torque
must be 96 lb-ft (130 Nm).
X Turn the jack back to its initial position and
store it together with the rest of the tire-
change tool kit in the trunk/cargo
compartment.
X Transport the faulty wheel in the trunk/
cargo compartment.
or
X Depending on the size of the wheel, you
may also be able to secure the defective
wheel in the spare wheel well. In this case,
you will have to remove the stowage well
casing from the spare wheel well and stow
it securely in the trunk/cargo
compartment.
X Check the tire pressure of the newly
mounted wheel and adjust it if necessary. Observe the recommended tire pressure
(Y
page 313).
i Vehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors. Wheel and tire combinations
General notes
! For safety reasons, Mercedes-Benz
recommends that you only use tires and
wheels 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-BenzO riginal
R MOE =Mercedes-BenzO riginal Extended
(tires featuring run-flat characteristics)
R MO1 =Mercedes-BenzO riginal (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
load, tire dimension variations could cause
the tires to come into contact with the
bodywork and axle components. This could
resul tind amage to the tires or the vehicle.
Mercedes-Ben zaccepts no liability for
damage resulting from the use of tires,
wheels or accessories othe rthan those
tested and approved.
Information on tires, wheels and approved
combinations can be obtained from any
qualified specialist workshop.
! Retreaded tires are neither tested nor
recommended by Mercedes-Benz, since 338
Wheel and tire combinationsWheels and tires

"Minispare" emergency spare wheel
16Tires Wheels V1 V2 V3 V4
T 125/90 R16 98 M
17
tire pressure: 420 kPa (4.2 bar/
61 psi) 3.5 B x 16 H2
Wheel offset: 0.79 in (20 mm) 001C
— — —
T 125/80 R17 99 M
18
tire pressure: 420 kPa (4.2 bar/
61 psi) 3.5 B x 17 H2
Wheel offset: 0.79 in (20 mm) — 001C 001C
—
T 125/70 R18 99 M
tire pressure: 420 kPa (4.2 bar/
61 psi) 3.5 B x 18 H2
Wheel offset: 0.79 in (20 mm) — — — 001C
i
The specified tire pressure is printed in yellow on the emergency spare wheel. Emergency spare wheel
Important safety notes
G
WARNING
The wheel or tire size as well as the tire type
of the spare wheel or emergency spare wheel
and the wheel to be replaced may differ.
Mounting an emergency spare wheel may
severely impair the driving characteristics.
There is a risk of an accident.
To avoid hazardous situations:
R adapty our driving style accordingly and
drive carefully.
R never mount more than one spare wheel or
emergency spare wheel that differs in size.
R only use a spare wheel or emergency spare
wheel of a different size briefly.
R do not switch ESP ®
off.
R have a spare wheel or emergency spare
wheel of a different size replaced at the
nearest qualified specialist workshop.
Observe that the wheel and tire dimensions
as well as the tire type must be correct. When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 50 mph
(80 km/h).
Snow chains must not be mounted on
emergency spare wheels. General notes
You should regularly check the pressure of
the emergency spare wheel, particularly prior
to long trips, and correc tthe pressure as
necessary (Y page 313). The applicable value
is found on the wheel or under "Technical
data" (Y page 338).
i When you are driving with the collapsible
spare wheel mounted, the tire pressure
loss warning system or the tire pressure
monitor cannot function reliably. Only
restart the tire pressure loss warning
system/the tire pressure monitor when the
damaged wheel has been replaced with a
new wheel.
16 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
17 C 300 4MATIC: not in conjunction with Sports package code 950/952.
18 C 300 4MATIC: only in conjunction with Sports package code 950/952. 342
Emergency spare wheelWheels and tires

Vehicles with tire pressure monitor:
afte rmounting an emergency spare wheel,
the system may still display the tire
pressure of the removed wheel for a few
minutes. The value displayed for the
mounted emergency spare wheel is not the
same as the current tire pressure of the
emergency spare wheel.
An emergency spare wheel may also be
mounted against the direction of rotation.
Observe the time restriction on use as well as
the speed limitation specified on the
emergency spare wheel.
Replace the tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel. "Minispare" emergency spare wheel
The "Minispare" emergency spare wheel can
be found in the stowage well under the trunk
floor.
X Lift the trunk floor upwards (Y page 260).X
Remove tool kit tray 0002.
X Turn stowage tray 0003counter-clockwise
and remove it.
X Remove "Minispare" emergenc yspare
wheel 0022.
Always observe the instructions and safety
notes in the "Mounting awheel" section
(Y page 334). Emergency spare wheel
343Wheels and tires Z

Technical data
"Minispare
"emergency spare wheel 16Tires Wheels V1 V2 V3 V4
T 125/9
0 R16 98 M 17
Tire pressure : 420 kPa (4.2 bar/
61 psi) 3.5 B x 16 H2
Wheel offset: 0.79 in (20 mm) 001C
— — —
T 125/80 R17 99 M
19
Tire pressure: 420 kPa (4.2 bar/
61 psi) 3.5 B x 17 H2
Wheel offset: 0.79 in (20 mm) — 001C 001C
—
T 125/70 R18 99 M
Tire pressure: 420 kPa (4.2 bar/
61 psi) 3.5 B x 18 H2
Wheel offset: 0.79 in (20 mm) — — — 001C
i
The specified tire pressure is printed in yellow on the emergency spare wheel.
16 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
17 C 300 4MATIC: not in conjunction with Sports package code 950/952.
19 C 300 4MATIC: only in conjunction with Sports package code 950/952. 344
Emergenc
yspare wheelWheels and tires