2014 MERCEDES-BENZ CLS wheel

Curbweight
The weight ofavehicle with standard
equipment includingthemaximum capacity
of fuel, oil and coolant.Italso includes the air-
conditioningsystem and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage.
Maximumload rating
The maximum tireload is the maximum
permissible weight in kilograms or lbs for
whichatireisapproved.
Maximumpermissible tirepressure
Maximum permissible tirepressure for one
tire.
Maximumload on one tire
Maximum load on one tire. This is calculated
by dividingthe maximum axle load of one axle
by two.
PSI (pounds per squareinch)
Astandardunitofmeasure for tire pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tirepressure
This is pressure inside the tire applying an
outward forcetoeach square inch of the tire's
surface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold.
Cold tirepressure
The tires are cold:
Rif the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
Rif the vehicle has been driven for less than
1mile (1.6 km).
Tread
The part of the tire that comes intocontact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to preventthe tire from
comingloose from the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control,aroof rack
orahigh-performancebattery, are not
included in the curb weight and the weight of
the accessories.
TIN (Tire Identification Number)
This isaunique identifier which can be used
byatire manufacturer to identify tires, for
example foraproduct 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 ofatire.
Traction
Traction is the result of friction between the
tires and the road surface.
Treadwear indicators
Narrow bars (tread wear bars) that are
distributed over the tire tread. If the tire tread
is level with the bars, the wear limit ofin
(1.6 mm) has been reached.
356All about wheels and tires
Wheels and tires

Occupant distribution
The distribution of occupantsinavehicleat
their designated seating positions.
Total load limit
Rated cargo and luggageloadplus
68 kilograms (150 lb) multiplied by the
number of seats in the vehicle.
Changingawheel
Flat tire
You can find information on whattodointhe
event ofaflat tire in the "Breakdown
assistance" section (Ypage 321).
Information on driving with MOExtended tires
in the event ofaflat tire can be found under
"MOExtended tires (tires with run-flat
characteristics" (Ypage 321).
Vehicle with emergency sparewheel:in
the event ofaflat tire, the emergencyspare
wheel is mounted as described under
"Mountingawheel" (Ypage 358).
Rotating the wheels
GWARNING
Interchangingthe 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 isarisk of
accident.
Rotate front and rear wheels only if the wheels
and tires are of the same dimensions.
!On vehicles equipped withatire 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 ataqualified
specialist workshop.
Always observe the instructions and safety
notes in the "Mountingawheel" section
(Ypage 358).
The wear patternsonthe front and rear tires
differ, depending on the operating conditions.
Rotate the wheels beforeaclear 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 this is not
available, the tires should then be replaced
every 3,000 to 6,000 miles (5,000 to
10,000 km), or earlier if the tire wear requires
this. Do not change the direction of wheel
rotation.
Cleanthe contact surfaces of the wheel and
the brake disc thoroughly every timeawheel
is interchanged. Check the tire pressure and,
if necessary, restart the tire pressure loss
warning system or the tire pressure monitor.
Direction of rotation
Tires withaspecified direction of rotation
have additional benefits, e.g. if there isarisk
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
Storewheels that are not being used inacool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel.
Cleaningthe wheels
GWARNING
The water jet fromacircular jet nozzle (dirt
blasters) can cause invisible exterior damage
Changingawheel357
Wheels and tires
Z

to the tiresorchassiscomponents.
Components damagedinthiswaymayfail
unexpectedly.There isarisk 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
levelground.
XApply the parking brake.
XBring the front wheels into the straight-
ahead position.
XShift the transmission to positionP.
XVehicles with AIRMATIC:make sure that
"normal" levelisselected(Ypage 189).
XSwitch off theengine.
XVehicles without KEYLESS-GO:remove
theSmartKey from theignition lock.
XVehicles with KEYLESS-GO:open the
driver'sdoor.
The on-board electronics nowhave status
0.This is the same as the SmartKey having
been removed.
XVehicles with KEYLESS-GO:remove the
Start/Stop button from the ignition lock
(Ypage 147).
XIf included in the vehicle equipment,
remove the tire-change tool kit from the
vehicle (Ypage 320).
XSecure the vehicle to prevent it from rolling
away.
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped withawheel chock,
it can be found in the tire-change tool kit
(Ypage 320).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away,for example when changing a
wheel.
XFold both plates upwards.
XFold out lower plate.
XGuidethe lugs on the lower plate fully into
the openings in base plate$.
Securing the vehicle on level ground
XOn level ground:place chocksorother
suitable items under the front and rear of
the wheel that is diagonallyopposite the
wheel you wish to change.
358Changingawheel
Wheels and tires

Securing the vehicle on slight downhillgradients
XOn light downhill gradients:place
chocks or othersuitableitemsinfront of
the wheelsofthe front and rearaxle.
Raisingthe vehicle
GWARNING
If youdonot positionthe jack correctly at the
appropriate jackingpoint of the vehicle, the
jack could tip over with the vehicle raised.
There isarisk of injury.
Only position the jack at the appropriate
jackingpoint of the vehicle. The base of the
jack must be positioned vertically, directly
under the jackingpoint of the vehicle.
!The jack is designed exclusively for
jackingupthe vehicle at the jackingpoints.
Otherwise, your vehicle could be damaged.
The following must be observed when raising
the vehicle:
Rto raise the vehicle, only use the vehicle-
specific jack that has been tested and
approved by Mercedes-Benz. If used
incorrectly, the jack could tip over with the
vehicle raised.
Rthe jack is designed only to raise and hold
the vehicle forashort time whileawheel
is being changed. It is not suited for
performing maintenancework under the
vehicle.
Ravoid changing the wheel on uphill and
downhill slopes.
Rbefore raising the vehicle, secure it from
rolling away by applying the parking brake
and insertingwheel chocks. Never
disengage the parking brake while the
vehicle is raised.
Rthe jack must be placed onafirm, flat and
non-slip surface. Onaloose surface, a
large, load-bearing underlay must be used.
Onaslippery surface,anon-slip underlay
must be used, e.g. rubber mats.
Rdo not use wooden blocks or similar
objectsasajack underlay.Otherwise, the
jackwill not be able to achieveits load-
bearingcapacity due to the restricted
height.
Rmakesure that the distancebetween the
underside of the tires and the grounddoes
not exceed 1.2in(3cm).
Rnever place your hands and feet under the
raised vehicle.
Rnever lie under the raised vehicle.
Rnever start the engine when the vehicle is
raised.
Rnever open or closeadoor or the trunk lid
when the vehicle is raised.
Rmakesure that no persons are present in
the vehicle when the vehicle is raised.
XUsinglug wrench,loosen the boltson
the wheel you wish to change by about one
full turn. Do not unscrew the bolts
completely.
Changingawheel359
Wheels and tires
Z

XPosition jack$at jacking point.
Example
XMake sure the foot of the jack is directly
beneath the jacking point.
XTurn crank!clockwise until jack$sits
completely on jacking pointand the
base of the jack lies evenly on the ground.
XTurn crank!until the tire is raised a
maximum of 1.2 in (3 cm) off the ground.
Removingawheel
!AMG vehicles:during removaland
repositioning of the wheel, the wheel rim
can strike the ceramic-brake disc and
damage it. Therefore, take precautions and
getasecond persontoassist you.
Alternatively, you can useasecond
alignment bolt.
!Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub
threads could otherwise be damaged when
you screw them in.
XUnscrew the uppermost wheel bolt
completely.
XScrew alignment boltinto the thread
instead of the wheel bolt.
XUnscrew the remaining wheel bolts fully.
XRemove the wheel.
Mountinganew wheel
GWARNING
Oiled or greased wheel boltsordamaged
wheel bolts/hub threads can cause thewheel
boltstocomeloose.Asaresult, you could
loseawheel while driving. There isarisk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contactaqualified
specialist workshop immediately.Have the
damagedwheel boltsorhub threads
replaced/renewed. Do notcontinue driving.
360Changingawheel
Wheels and tires

GWARNING
If you tighten the wheelbolts or wheelnuts
when the vehicleisraised, the jack couldtip
over. There isarisk of injury.
Only tighten the wheelbolts or wheelnuts
when the vehicleisonthe ground.
Always pay attention to the instructions and
safety notes in the "Changingawheel"
section (Ypage357).
Only use wheelbolts that have been designed
for the wheeland the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheelbolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
!AMG vehicle with ceramic brake
discs:during removaland repositioning of
the wheel, the wheelrim can strike the
ceramic-brake disc and damage it.
Therefore, take precautions and have a
second personassist you. Alternatively,
you can useasecond alignment bolt.
!To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
Positioningawheel (example: vehicle with anemergency spare wheel)
XCleanthe wheel and wheel hub contact
surfaces.
XSlide the wheel to be mounted onto the
alignment bolt and push it on.
XTighten the wheel bolts until they are
finger-tight.
XUnscrew the alignment bolt.
XTighten the last wheel bolt until it is finger-
tight.
XVehicles withacollapsible spare
wheel:inflate thecollapsible spare wheel
(Ypage 368).
Only then lower thevehicle.
Lowering thevehicle
GWARNING
The wheels could work loose if thewheel nuts
and boltsare not tightenedtothe specified
tightening torque. There isarisk of accident.
Have the tightening torque immediately
checked ataqualified specialist workshop
afterawheel is changed.
!Vehicles withacollapsible spare
wheel:before lowering thevehicle, inflate
thecollapsible spare wheel with thetire
inflationcompressor. The wheel rim could
otherwise be damaged.
Tighteningthe wheel nuts (example: vehicle withan emergencyspare wheel)
XTurn the crank of the jack counter-
clockwise until the vehicle is once again
standingfirmly on the ground.
XPlace the jack to one side.
XTighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated (to). The specified
tightening torque is96 lb-ft(130 Nm).
XTurn the jack back to its initial position.
Changingawheel361
Wheels and tires
Z

XStow the jack and the restofthe vehicle
toolsinthe trunk again.
XCheck the tire pressure of the newly
mounted wheel and adjustitifnecessary.
Observe the recommended tire pressure
(Ypage 338).
iVehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors.
Wheel and tirecombinations
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:
RMO=Mercedes-BenzOriginal
RMOE=Mercedes-BenzOriginal Extended
(tires featuring run-flat characteristics)
RMO1=Mercedes-Benz Original (only
certain AMG tires)
Mercedes-BenzOriginal Extended tires
may only be usedonwheels 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,
vehiclenoise emissions or fuel
consumption, may otherwise be adversely
affected. In addition, when driving with a
load, tire dimension variations couldcause
the tires to come into contact with the
bodywork and axle components. This could
result in damage to the tires or the vehicle.
Mercedes-Benz accepts no liability for
damage resulting from the use of tires,
wheels or accessories other than those
tested and approved.
Information on tires, wheels and approved
combinations can be obtained from any
qualified specialist workshop.
Overviewofabbreviations usedinthe
following tire tables:
RBA: both axles
RFA: front axle
RRA: rear axle
The recommended pressures for various
operating conditionscan be found:
Ron the Tire and Loading Information placard
with the recommended tire pressures on
the B-pillar on the driver's side
Rin the tire pressure table on the inside of
the fuel filler flap
Observe the notes on recommended tire
pressures under various operating conditions
(Ypage 338).
Check tire pressures regularly,and only when
the tires are cold. Comply with the
maintenancerecommendations of the tire
manufacturer in the vehicle document wallet.
Notes on the vehicle equipment–always
equip the vehicle with:
Rtires of the same size onagiven axle (left/
right)
Rthe same type of tires atagiven time
(summer tires, winter tires, MOExtended
tires)
Vehicles with MOExtendedtires are not
equipped withaTIREFIT kit at the factory. It
is therefore recommendedthat you
additionally equip your vehicle withaTIREFIT
kit if you mounttires that do not feature run-
flat properties,e.g. winter tires.ATIREFIT kit
may be obtained fromaqualified specialist
workshop.
iNot all wheeland tire combinations are
available at the factory for all countries.
iOn the following pages, you can find
information on approved wheelrims and
tiresizesfor equipping your vehicle with
winter tires. Winter tires are not available
362Wheel and tirecombinations
Wheels and tires

at thefactory as standard equipmentor
optional extras.
If you would like to equip your vehicle with
approved winter tires, you may also, in
certain circumstances, require rims of the
appropriate size. The sizes of the approved
winter tires may deviate from that of the
standard tires. This is dependent on the
model and the equipment installed at the
factory.
The tires and wheel rims, as well as further
information, can be obtained ataqualified
specialist workshop.
Wheel and tirecombinations363
Wheels and tires
Z