tire size MERCEDES-BENZ CLS 2014 Owners Manual

Characteristics..............................354
Checking ........................................ 335
Definition of terms.........................354
Direction of rotation......................357
Display message............................258
Distributionofthe vehicle
occupants (definition)....................357
DOT, Tire Identification Number
(TIN) ...............................................354
DOT (Department of
Transportation) (definition)............355
GAWR (Gross Axle Weight Rating)
(definition).....................................355
GVW (Gross Vehicle Weight)
(definition).....................................355
GVWR(Gross Vehicle Weight
Rating) (definition).........................355
Important safety notes..................334
Increasedvehicle weight due to
optional equipment (definition)......355
Kilopascal (kPa)(definition)...........355
Labeling (overview)........................351
Load bearing index (definition)......356
Load index.....................................353
Load index (definition)...................355
Maximum loaded vehicle weight
(definition).....................................355
Maximum loadonatire
(definition).....................................356
Maximum permissible tire
pressure (definition) ....................... 356
Maximum tire load.........................353
Maximum tire load(definition).......356
MOExtended tires..........................336
Optional equipment weight
(definition).....................................356
PSI (pounds per square inch)
(definition).....................................356
Replacing.......................................357
Service life.....................................336
Sidewall (definition).......................356
Speed rating (definition)................355
Storing...........................................357
Structure and characteristics
(definition).....................................354
Temperature..................................350
TIN (Tire Identification Number)
(definition).....................................356
Tire bead(definition)......................356
Tire pressure (definition)................356
Tire pressures(recommended)......355
Tire size (data)...............................362
Tire size designation, load-bearing
capacity, speedrating .................... 351
Tire tread.......................................335
Tire tread (definition).....................356
Total loadlimit (definition).............357
Traction.........................................350
Traction (definition).......................356
Treadwear.....................................350
Uniform Tire Quality Grading
Standards......................................349
Uniform Tire Quality Grading
Standards(definition)....................355
Unladen weight (definition)............356
Wearindicator(definition).............356
Wheelrim (definition)....................355
see Flat tire
Top Tether............................................64
Towing
Important safety guidelines...........328
Installing the towing eye................329
Removing the towing eye...............330
With the rear axle raised................330
Towing away
With both axlesonthe ground.......330
Tow-starting
Emergency engine starting............331
Important safety notes..................328
Transmission
see Automatic transmission
Transmission position display.........156
Transmission position display
(DIRECT SELECTlever)......................156
Transporting the vehicle..................330
Trim pieces (cleaning instructions).316
Trip computer (on-board
computer)..........................................222
Trip odometer
Calling up ....................................... 222
Resetting (on-board computer)......223
Trunk
Emergency release..........................87
Important safety notes....................84
Opening/closing (automatically
from inside) ...................................... 86
18Index

Tighteningtorque ........................... 361
Wheel size/tire size.......................362
Windowcurtain air bag
Operation .........................................47
Windows
see Side windows
Windshield
Defrosting......................................139
Windshieldwasher fluid
see Windshield washer system
Windshield washer system
Adding washer fluid.......................309
Notes.............................................378
Windshieldwipers
Problem (malfunction)...................128
Replacing the wiper blades............126
Switching on/off...........................125
Winterdriving
Important safety notes..................336
Slippery road surfaces...................174
Snow chains..................................337
Wintertires
M+S tires.......................................336
Wiper blades
Cleaning ......................................... 314
Important safety notes..................126
Replacing.......................................126
Wooden trim (cleaning
instructions)......................................316
Z
ZONE function
Switching on/off...........................139
20Index

If ESP®detects that the vehicle is deviating
from the direction desiredbythe driver, one
or more wheels are braked to stabilize the
vehicle.The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP®assists the driver when
pulling away on wet or slippery roads. ESP®
can also stabilize the vehicle during braking.
If ESP®intervenes, theESP®warning
lamp flashes in the instrumentcluster.
If ESP®intervenes:
XDo not deactivateESP®under any
circumstances.
XOnly depressthe accelerator pedal as far
as necessary when pulling away.
XAdapt your drivingstyle to suit the
prevailing road and weatherconditions.
iOnly use wheels with the recommended
tire sizes. Only then will ESP®function
properly.
ETS/4ETS (Electronic Traction System)
ETS/4ETS traction control is part of ESP®.
Traction control brakes the drive wheels
individuallyifthey spin. This enables you to
pull away and accelerate on slippery surfaces,
for example if the road surface is slippery on
one side. In addition, more drive torque is
transferred to the wheel or wheels with
traction.
Traction control remains active, even if you
deactivate ESP®.
Deactivating/activating ESP®(except
AMG vehicles)
GWARNING
If you deactivate ESP®,ESP®no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP®in the situations
described in the following.
!Avoid spinningthe driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
XTo deactivate:(Ypage 227).
The ESP®OFF warning lamp in the
instrument cluster lights up.
XTo activate:(Ypage 227).
The ESP®OFF warning lamp in the
instrument cluster goes out.
ESP®is activated automatically when the
engine is started.
The ECO start/stop function switches the
engine off automatically when the vehicle
stops moving. The engine starts
automatically when the driver wants to pull
away again. ESP®remains in its previously
selected status. Example: if ESP®was
deactivated before the engine was switched
off, ESP®remains deactivated when the
engine is switched on again.
If ESP®is deactivated and one or more wheels
start to spin, theESP®warning lamp in
the instrument cluster flashes. In such
situations, ESP®will not stabilize the vehicle.
It may be best to deactivate ESP®in the
following situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
If you deactivate ESP®:
RESP®no longer improves driving stability.
Rtraction control is still activated.
RESP®still provides support when you
brake.
Rengine torque is not limited and the drive
wheels are able to spin. The spinning
wheels produceacutting effect for better
traction.
Driving safety systems69
Safety
Z

Alignment bolt
%Sheet for faulty wheel
Tire inflation compressor
Lugwrench
Fuseallocation chart
XOpenthe trunk lid.
XLift the trunk floor upwards (Ypage 283).
Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
RMOExtended tires (tires with run-flat
properties) (Ypage 321)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
Ran emergency spare wheel(Ypage 367)
Information on changing/mountingawheel
(Ypage 357).
XStop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
XSwitch on the hazard warning lamps.
XSecure the vehicle against rolling away
(Ypage 167).
XIf possible, bring the front wheels into the
straight-ahead position.
XVehicles with AIRMATIC: make sure that
"normal" level is selected (Ypage 189).
XSwitch off the engine.
XVehicles without KEYLESS-GO:remove
the SmartKey from the ignition lock.
XVehicles with KEYLESS-GO:open the
driver's door.
The on-board electronicsnow have 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).
XAll occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
XMake sure that no one is near the danger
area whileawheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
XGet out of the vehicle. Pay attention to
traffic conditionswhen doing so.
XClose the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there isatotal loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognizeMOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-
bearing capacity and the speed index
(Ypage 351).
MOExtended tires may only be used in
conjunction with an active tire pressure loss
warning system or with an active tire pressure
monitor.
If the pressureloss warning message
appearsinthe multifunction display:
RObserve the instructions in the display
messages (Ypage 258).
RCheck the tire for damage.
RIf driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden.
Flat tire321
Breakdown assistance

In addition to the vehicle load, the driving
distance possible depends upon:
RSpeed
RRoadcondition
ROutside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving
conditions/maneuvers, or it can be increased
throughamoderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceedamaximum speed of
50 mph (80 km/h).
iWhen replacing one or all tires, make sure
that you use only tires:
Rof the size specified for the vehicle and
Rmarked "MOExtended"
Ifatire has gone flat and cannot be
replaced withaMOExtended tire, a
standard tire may be used asatemporary
measure. Make sure that you use the
proper size and type (summerorwinter
tire).
Important safety notes
GWARNING
When drivinginemergencymode, the driving
characteristics deteriorate, e.g. when
cornering, accelerating quickly and when
braking. There isarisk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steeringand drivingmaneuvers,
and drivingover obstacles (curbs, potholes,
off-road). This applies in particular toaladen
vehicle.
Stop drivinginemergencymode if:
Ryou hear bangingnoises.
Rthe vehicle starts to shake.
Ryou see smokeand smell rubber.
RESP®is interveningconstantly.
Rthere are tearsinthe sidewalls of the tire.
After drivinginemergency mode, have the
wheel rims checked ataqualified specialist
workshop with regardtotheir further use. The
defectivetiremust be replaced in everycase.
Battery (vehicle)
Important safety notes
Special tools and expert knowledge are
requiredwhen working on the battery, e.g.
removal and installing. You should therefore
have all work involvingthe battery carried out
ataqualified specialist workshop.
GWARNING
Work carried out incorrectly on the battery
can lead, for example, toashortcircuit and
thus damage the vehicle electronics. This can
lead to function restrictionsapplying to
safety-relevantsystems,e.g.thelighting
system, ABS(anti-lockbrakingsystem) or
ESP®(Electronic StabilityProgram). The
operating safetyofyour vehiclemay be
restricted. You could lose control of the
vehicle, for example:
Rbraking
Rin theevent of abruptsteeringmaneuver
and/orwhen the vehicle's speed is not
adapted to the road conditions
There isarisk of an accident.
In the event ofashort circuit orasimilar
incident, contactaqualified specialist
workshop immediately. Do not drive any
further. You should have all work involving the
battery carried out ataqualifiedspecialist
workshop.
GWARNING
Electrostatic build-up can lead to thecreation
of sparks,whichcould ignite thehighly
explosive gases ofabattery. Thereisariskof
an explosion.
322Battery (vehicle)
Breakdown assistance

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Important safetynotes
GWARNING
If wheels and tires of the wrong size are used,
the wheel brakes or suspension components
may be damaged. There isarisk of an
accident.
Always replacewheels and tires with those
that fulfill the specifications of the original
part.
When replacing wheels, make sure to use the
correct:
Rdesignation
Rmodel
When replacing tires, make sure to use the
correct:
Rdesignation
Rmanufacturer
Rmodel
GWARNING
Aflat tireseverely impairs the driving,
steeringand braking characteristics of the
vehicle. There isarisk of accident.
Tires without run-flat characteristics:
Rdo not drive withaflat tire.
Rimmediately replacethe flat tirewith your
emergencyspare wheel or spare wheel, or
consultaqualified specialist workshop.
Tires with run-flat characteristics:
Rpay attention to the information and
warningnotices on MOExtended tires (tires
with run-flat characteristics).
Accessories that are not approved for your
vehicle by Mercedes-Benzorthat are not
being used correctly can impair the operating
safety.
Before purchasing and using non-approved
accessories, visitaqualified specialist
workshop and inquire about:
Rsuitability
Rlegal stipulations
Rfactory recommendations
Information on the dimensions and types of
wheels and tires for your vehicle can be found
in the "Wheel/tire combinations" section
(Ypage 362).
Information on air pressure for the tires on
your vehicle can be found:
Ron the vehicle's Tire and Loading
Information placard on the B-pillar
(Ypage 345)
Ron the tire pressure label on the fuel filler
flap (Ypage 165)
Runder "Tire pressure" (Ypage 338)
Operation
Information on driving
If the vehicle is heavily loaded, check the tire
pressures and correct them if necessary.
While driving, pay attention to vibrations,
noises and unusual handling characteristics,
e.g. pulling to one side. This may indicate that
the wheels or tires are damaged. If you
suspect thatatire is defective, reduce your
speed immediately. Stop the vehicle as soon
as possible to check the wheels and tires for
damage. Hidden tire damage could also be
causing the unusual handling characteristics.
If you find no signs of damage, have the tires
334Operation
Wheels and tires

Bar indicatorfor treadwearisintegrated
into the tire tread.
Treadwear indicators(TWI) are required by
law. Six indicatorsare positioned on the tire
tread. Theyare visible once the treaddepth
is approximatelyin (1.6 mm). If this is the
case,the tire is so worn that it mustbe
replaced.
Selecting, mounting and replacing
tires
ROnly mount tires and wheels of the same
type and make.
Exception: it is permissible to install a
different type or make in the event ofaflat
tire. Observe the "MOExtended tires (tires
with run-flat characteristics" section
(Ypage321).
ROnly mount tires of the correct size onto
the wheels.
RBreak in new tires at moderate speeds for
the first 60 miles(100 km).They only reach
their full performance after this distance.
RDo not drive with tires which have too little
tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
RReplace the tires after six years at the
latest, regardless of wear.
Observe the notes on the emergency spare
wheel (Ypage 367).
MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there isatotal loss of
pressure in one or more tires.
MOExtended tires may only be used in
conjunction with an active tire pressure loss
warning system or with an active tire pressure
monitor and on wheels specifically tested by
Mercedes-Benz.
Notes on driving with MOExtended tires with
aflat tire (Ypage 321).
iVehicles equipped with MOExtended tires
are not equipped withaTIREFIT kit at the
factory. It is therefore recommended that
you additionallyequip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
ATIREFIT kit can be obtained from a
qualified specialist workshop.
Winter operation
General notes
Have your vehicle winterproofed ataqualified
specialist workshop at the onset of winter.
Observe the notes in the "Changingawheel"
section (Ypage 357).
Driving with summer tires
At temperatures below 45‡(+7 †), summer
tires lose elasticity significantly,and
therefore traction and braking power as well.
Change the tires on yourvehicle to
M+S tires. Using summer tires at very cold
temperatures could cause crackstoform,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility
for this type of damage.
M+S tires
GWARNING
M+S tires withatiretread depthofless than
in (4 mm)are notsuitable for use in winter
and do notprovide sufficient traction.There
isariskofanaccident.
M+S tires withatread depthofless than
in (4 mm)must be replacedimmediately.
At temperatures below 45‡(+7 †), use
winter tires or all-weather tires. Both typesof
tireare identified by theM+S marking.
336Winteroperation
Wheels and tires

Only winter tires bearing thesnowflake
symbol in addition to the M+S marking
provide the best possiblegrip in wintry road
conditions.
Only these tires will allowdriving safety
systems such as ABS and ESP®to function
optimally in winter. These tires have been
developedspecificallyfor driving in snow.
Use M+S tires of the same make and tread on
all wheels to maintain safe handling
characteristics.
Alwaysobserve the maximum permissible
speed specified for the M+S tires you have
mounted.
Once the winter tires are mounted:
XCheck the tire pressures (Ypage 341).
XVehiclesfor Canada:restart the tire
pressure loss warning system
(Ypage 342).
XRestart the tire pressure monitor
(Ypage 342).
For more information on driving with the
emergency spare wheel, see (Ypage 367).
Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There isarisk of an accident.
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralways install snow chains in pairs to the
rear wheels.
!On vehicles with AIRMATIC, you must
drive at raised vehicle level if snow chains
have been mounted. The vehicle may
otherwise be damaged.
!On some tire sizes there is not enough
space for snow chains. To avoid damage to
the vehicle or tires, observe the "Wheel and
tire combinations" section under "Tires and
wheels".
For safety reasons, Mercedes-Benz
recommends that you only use snow chains
that have been speciallyapproved for your
vehicle by Mercedes-Benz,orare of a
corresponding standard of quality.
If you intend to mount snow chains, please
bear the following points in mind:
RSnow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel-tire combinations (Ypage 362).
ROnly use snow chains when driving on
roads completely covered by snow.
Remove the snow chains as soon as
possiblewhen you come toaroad that is
not snow-covered.
RLocal regulations may restrict the use of
snow chains. Observe the appropriate
regulations if you wish to mount snow
chains.
RDo not exceed the maximum permissible
speed of 30 mph (50 km/h).
iYou may wish to deactivate ESP®when
pulling away with snow chains installed
(Ypage 69). This way you can allow the
wheels to spin inacontrolled manner,
achieving an increased driving force
(cutting action).
For more information on driving with the
emergencyspare wheel, see (Ypage 367).
Winter operation337
Wheels and tires
Z

Example: tire pressure table with tire dimensions
Ifatire size precedesatire pressure, the tire
pressure informationfollowing is only valid
for that tire size. The load conditions "partially
laden" and "fully laden" are defined in the
table for different numbers of occupantsand
amounts of luggage. The actual number of
seats may differ.
Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g.
R18.The rim diameter is part of the tire size
and can be found on the tire sidewall
(Ypage 351).
If the tire pressures have been set to the
lower values for lighter loads and/or lower
road speeds, the pressures should be reset
to the higher values:
Rif you want to drive with an increased load
and/or
Rif you want to drive at higher road speeds.
iThe tire pressures for increased loads
and/or higher road speeds, shown in the
tire pressure table, may haveanegative
effect on driving comfort.
If the tire pressure is not set correctly, this
can lead to an excessive build up of heat and
asudden loss of pressure.
For more information, contactaqualified
specialist workshop.
Important notes on tire pressure
GWARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result inatire
blow-out. There isarisk of an accident.
RCheck the tire for foreign objects.
RCheck whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage,
contactaqualified specialist workshop.
GWARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and
malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire
pressure monitors keep the tire valve open.
This can also result in tire pressure loss. There
isarisk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Useasuitable pressure gauge to check the
tire pressure. The outer appearance ofatire
does not permit any reliable conclusion about
the tire pressure. On vehicles equipped with
the electronic tire pressure monitoring
system, the tire pressure can be checked
using the on-board computer.
The tire temperature and pressure increase
when the vehicle is in motion.This is
dependent on the driving speed and the load.
Therefore, you should only correct tire
pressures when the tires are cold.
Check339
Wheels and tires
Z

Example: current tire pressure display
Important safety notes
GWARNING
Each tire,including the spare (ifprovided),
should be checked at least once every two
weeks when cold and inflated to the pressure
recommended by the vehiclemanufacturer
on the Tire and Loading Information placard
on the driver'sdoor B-pillar or the tire
pressure label on the inside of the fuel filler
flap.Ifyour vehicle has tires ofadifferent size
than the size indicated on the Tire and Loading
Information placard or, if available, the tire
pressure label, you should determinethe
proper tire pressure for those tires.
As an added safety feature, your vehicle has
been equipped withatire pressure monitoring
system (TPMS) that illuminatesalow tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale lights up, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Drivingona
significantly underinflated tire causes the tire
to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle's
handling and stopping ability. Please note that
the TPMS is notasubstitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correcttire
pressure, even if underinflation has not
reached the level to trigger illumination 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 detectsamalfunction, the warning
lamp will flash for approximatelyaminute and
then remain continuously illuminated. This
sequence will be repeated every time the
vehicle is started as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur foravariety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate Tires and wheels allow the TPMS to
continue to function properly.
It is the driver's responsibility to set the tire
pressure to that recommended for cold tires
which is suitable for the operating situation
(Ypage 338). Note that the correcttire
pressure for the current operating situation
must first be taught-in to the tire pressure
monitor. If there isasubstantial loss of
pressure, the warning threshold for the
warning message is aligned to the reference
values taught-in.Restart the tire pressure
monitor after adjustingthe pressure of the
cold tires (Ypage 345). The current
pressures are saved as new reference values.
Asaresult,awarning message will appear if
the tire pressure drops significantly.
The tire pressure monitor does not warn you
of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(Ypage 338).
The tire pressure monitor is not able to warn
you ofasudden loss of pressure, e.g. if the
tire is penetrated byaforeign object. In the
event ofasudden loss of pressure, bring the
vehicle toahalt by brakingcarefully. Avoid
sudden steering movements
Check343
Wheels and tires
Z