2014 MERCEDES-BENZ CLA warning

not covered with ice or snow. Take
appropriate care when driving.
!Avoid wheelspin. This can lead to damage
to the drive train.
Temperature
GWARNING
The temperature grade for this tire is
established for a tire thatis properly inflated
and not overloaded.Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause
excessive heatbuild-up and possible tire
failure.
The temperature grades areA(the highest),
B, and C. These represent the tire's
resistance to the generationofheat 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
excessive temperature can lead to sudden
tire failure. The gradeCcorresponds to a level
of performance which all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
Tire labeling
Overview of tire labeling
The following markings are on the tire in additionto the tire name (sales designation) and themanufacturer's name:
Uniform tire Quality Grading Standard
(Ypage 333)
DOT, Tire Identification Number
(Ypage 332)
"Maximum tire load (Ypage 327)
!Maximum tire pressure (Ypage 318)
Manufacturer
Tire material (Ypage 333)
Tire size designation, load-bearing
capacity and speed index (Ypage 330)
Load index (Ypage 332)
Tire name
iTire data is vehicle-specific and may
deviate from the data in the example.
Tire labeling329
Wheels and tires
Z

Tire size designation,load-bearing
capacity and speed rating
Tire width
Nominal aspectratio in %
"Tire code
!Rim diameter
Load bearing index
Speed rating
iTire data is vehicle-specific and may
deviate from the data in the example.
General:depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letterthat precedes the size description.
If there is no letter preceding the size
description (as shown above): these are
passenger vehicle tires according to
European manufacturing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S.
manufacturing standards.
If "LT" precedes the size description: these
are light truck tires according to U.S.
manufacturing standards.
If "T" precedes the size description: these are
compact emergency spare wheels at high tire
pressure, to be used only temporarily in an
emergency.
Tire width:tire widthshows the nominal
tire width in millimeters.
Nominal aspect ratio:aspect ratiois the
size ratio between the tire height and the tire
width and is shown in percent.The aspect
ratio is calculated by dividing the tire width by
the tire height.
Tire code:tire code"specifies the tire type.
"R" represents radial tires; "D" represents
diagonal tires; "B" represents diagonal radial
tires.
Optionally, tires with a maximum speed of
over 149mph (240km/h) may have "ZR" in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
Rim diameter:rim diameter!is the
diameter of the bead seat, not the diameter
of the rim flange. The rim diameter is
specified in inches (in).
Load bearing index:load bearing index
is a numerical code which specifies the
maximum load-bearing capacity of a tire.
Do not overload the tires by exceeding the
specified load limit. The maximum
permissible load can be found on the
vehicle's Tire and Loading Information
placard on the B-pillar on the driver's side
(Ypage 323).
Example:
Aload-bearing index of 91 indicates a
maximum load of 1,356lb (615kg) that can be
carried by the tires. For further information on
the maximum tire load in kilograms and
pounds, see (Ypage 327).
For further information on the load-bearing
index, see Load index (Ypage 332).
Speed rating:speed rating specifies the
approved maximum speed of the tire.
GWARNING
Exceeding the stated tire load-bearing
capacity and the approved maximum speed
could lead to tire damage or the tire bursting.
There is a risk of accident.
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle.
Regardless of the speed rating, always
observe the speed limits. Drive carefully and
330Tire labeling
Wheels and tires

Changingawheel
Flat tire
You can find information on whatto do in the
event of a flat tire in the "Flat tire" section
(Ypage 295). Information on driving with
MOExtended tires in the event of a flat tire
can be found under "MOExtended tires (tires
with run-flat characteristics" (Ypage 295).
Rotating the wheels
GWARNING
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 pay attention to the instructions and
safety notes when changing a wheel
(Ypage 336).
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 contactsurfacesofthe wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and, if
necessary, restart the tire pressure loss
warning system or the tire pressure monitor.
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
GWARNING
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.
Mountingawheel
Preparing the vehicle
XStop the vehicle on solid, non-slippery and
level ground.
XApply the electric parking brake manually
(Ypage 154).
336Changingawheel
Wheels and tires

XBring the front wheels into the straight-
ahead position.
XMove the DIRECT SELECT lever to position
P.
XSwitch off the engine.
XRemove the SmartKey from the ignition
lock.
XIf included in the vehicle equipment,
remove the tire-change tool kit from the
vehicle.
XSecure the vehicle to prevent it from rolling
away.
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped with a wheel chock,
it can be found in the tire-change tool kit
(Ypage 294).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away, for example whenchanging a
wheel.
XFold both plates upwards.
XFold out lower plate.
XGuide the lugs on the lower plate fully into
the openings in base plate".
Securing the vehicle on level ground
XOn level ground:place chocks or other
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change.
Securing the vehicle on slight downhill gradients
XOn light downhill gradients:place
chocks or other suitable items in front of
the wheels of the front and rear axle.
Raising the vehicle
GWARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate
jacking point of the vehicle. The base of the
jack must be positioned vertically, directly
under the jacking point of the vehicle.
Changingawheel337
Wheels and tires
Z

Covers, front(example: vehicles with AMGequipment)
AMG vehicles and vehicles with AMG
equipment:to protectthe vehicle body, the
vehicle has covers next to the jacking points
on the outer sills.
XAMG vehicles and vehicles with AMG
equipment:fold coverupwards.
XTake the ratchet wrench out of the tire-
changing tool kit and place it on the
hexagon nut of the jack so that the letters
AUFare visible.
XPosition jack"at jacking point.
XMake sure the foot of the jack is directly
beneath the jacking point.
XTurn ratchet wrench!until jack"sits
completely on jacking pointand the
base of the jack lies evenly on the ground.
Removingawheel
!Do not place wheel bolts in sand or on a
dirty surface. The boltand wheel hub
threads could otherwise be damaged when
you screw them in.
XUnscrew the wheel bolts.
XRemove the wheel.
Mountinganew wheel
GWARNING
Oiled or greased wheel bolts or damaged
wheel bolts/hub threads can cause the wheel
bolts to come loose.As a result, you could
lose a wheel while driving. There is a risk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contact a qualified
specialist workshop immediately.Have the
damaged wheel bolts or hub threads
replaced/renewed. Do notcontinue driving.
GWARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notes in the "Changing a wheel"
section (Ypage 336).
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
Changingawheel339
Wheels and tires
Z

!To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
XCleanthe wheel and wheel hub contact
surfaces.
XPlace the new wheel on the wheel hub and
push it on.
XTighten the wheel bolts until they are
finger-tight.
Lowering the vehicle
GWARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to 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.
XPlace the ratchet wrench onto the hexagon
nut of the jack so that the lettersABare
visible.
XTurn the ratchet wrench until the vehicle is
once again standing firmly on the ground.
XPlace the jack to one side.
XTighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated (to). The tightening torque
must be96 lb-ft (130 Nm).
XTurn the jack back to its initial position.
XStow the jack and the rest of the vehicle
tools in the vehicle again.
XCheck the tire pressure of the newly
mounted wheel and adjust it if necessary.
Observe the recommended tire pressure
(Ypage 316).
iVehicles 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-Benzspecifically 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:
RMO=Mercedes-BenzOriginal
RMOE=Mercedes-BenzOriginal Extended
(tires featuring run-flat characteristics)
RMO1=Mercedes-BenzOriginal (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,
340Wheel and tire combinations
Wheels and tires

Tires
Summer tiresAlloywheelsV1V2
BA225/40 R18 92 W XL
MOExtended6, 7, 87.5 J x 18 H2
Wheel offset: 2.05 in (52 mm)
—
BA235/40 ZR18 95YXL68.0 J x 18 H2
Wheel offset: 1.89 in (48 mm)
—
BA235/35 ZR19 91YXL68.0 J x 19 H2
Wheel offset: 1.89 in (48 mm)
—
All-weather tiresAlloy wheelsV1V2
BA225/45 R17 91 H
M+SMOExtended6, 77.5 J x 17 H2
Wheel offset: 2.07 in
(52.5 mm)
—
Winter tiresAlloy wheelsV1V2
BA205/50 R17 93 H XL
M+SMOExtended76.5 J x 17 H2
Wheel offset: 1.93 in (49 mm)
—
BA215/45 R18 93 V XL M+S7.5 J x 18 H2
Wheel offset: 1.73 in (44 mm)
—
BA235/40 R18 95 V XL M+S68.0 J x 18 H2
Wheel offset: 1.89 in (48 mm)
—
6Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.7MOExtended tires (tires with run-flatcharacteristics) only in conjunction with active tire pressure losswarning.8Observe information on "Large wheels" in the "Wheel/tire combination" section.
342Wheel and tire combinations
Wheels and tires

Example: vehicle identification plate (Canada only)
VIN
"Paint code
iThe data shown on the vehicle
identificationplate is used only as an
example. This data is differentfor every
vehicle and can deviate from the data
shown here. You can find the data
applicable to your vehicle on the vehicle
identification plate.
VIN
XSlide the right-hand front seat to its
rearmost position.
XFold up floor coveringin front of the
right-hand front seat.
You will see VIN.
The VIN can also be found in the following
locations:
Ron the lower edge of the windshield
(Ypage 345)
Ron the vehicle identification plate
(Ypage 344)
Engine number
Emission control information plate,
including the certification of both federal
and Californian emissions standards
VIN (on the lower edge of the windshield)
"Engine number (stamped into the
crankcase)
Service products and filling
capacities
Important safety notes
GWARNING
Service products may be poisonous and
hazardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children.
HEnvironmental note
Dispose of service products in an
environmentally responsible manner.
Service products and filling capacities345
Technical data
Z