2019 MERCEDES-BENZ C CLASS tire size

fied onthevehicle identification plate ontheB‑pillar onthe driver's side.
Maximumweight ofthe ladenvehicle:themaximumweight isthe sum ofthe curbweightofthevehicle,theweight ofthe accessories,themaximum load andtheweight of optional equip‐ment installed atthefactory.
Kilopascal (kPa):metric unitfor tire pressure.6.9 kPa correspondsto1 psi. Another unitfortire pressureis bar.100 kilopascal (kPa) equals1 bar.
Load index:in additiontothe load-bearingindex,the load index may also be imprinted onthe sidewall ofthe tire. This specifiesthe load-bearing capacity ofthe tire more precisely.
Curbweight:theweight of avehicle withstand‐ard equipment includingthe maximum capacityof fuel, oil and coolant. It also includesthe airconditioning system and optional equipment ifthese are installed onthevehicle, but does notinclude passengers or luggage.
Maximum tire load:the maximum tire load isthe maximum permissibleweight in kilograms orlbsfor whicha tire is approved.
Maximum permissible tire pressure:maxi‐mum permissible tire pressurefor one tire.
Maximum load on one tire:maximum load onone tire. This is calculatedbydividingthe maxi‐mum axle load of one axlebytwo.
PSI (pounds per square inch):standard unit ofmeasurementfor tire pressure.
Aspectratio:ratio between tire height and tirewidth in percent.
Tirepressure:pressure insidethe tire applyingan outwardforcetoeverysquare inch ofthe tire.The tire pressure is specified in pounds persquare inch (psi), in kilopascals (kPa) or in bar.The tire pressure should only be corrected whenthe tires are cold.
Cold tire pressure:the tires are cold whenthevehicle has been parkedfor at least3 hourswithout direct sunlight onthe tires orthevehiclehas been drivenfor lessthan 1 mile (1.6 km).
Tirecontact surface:the part ofthe tirethatcomes into contact with theroad.
Tirebead:the purpose ofthe tire bead istoensurethatthe tire sits securely onthe wheel
rim. There are several wire cores inthe tire beadtopreventthe tire fromchanging length onthewheelrim.
Sidewall:the part ofthe tire betweenthe treadandthe tire bead.
Weight of optional equipment:the combinedweight ofthe optional equipmentweighing morethanthereplacedstandard parts and morethan5 lbs (2.3kg).This optional equipment, such ashigh-performance brakes, level control system, aroof luggagerackor high-performance batteries,is not included inthe curbweight andtheweightofthe accessories.
TIN (Tire IdentificationNumber):a uniqueidentification number which can be usedby atire manufacturertoidentify tires,forexample,in a productrecall, andthus identifythe pur‐chasers. The TIN is made up ofthe manufactur‐er's identity code, tire size, tire type code andthe manufacturing date.
Load-bearing index:the load-bearing index is acodethat containsthe maximum load-bearingcapacity of a tire.
41 0Wheels and tires

Traction:traction isthe gripresulting from fric‐tion betweenthe tires andtheroad surface.
Wear indicator:narrowbars (treadwear bars)that are distributedoverthe tire contact surface.Ifthe tire tread is level withthe bars,thewearlimit of 1/16in (1.6 mm) has beenreached.
Distribution ofvehicle occupants:distributionofvehicle occupantsover designated seat posi‐tions in avehicle.
Maximum permissible payloadweight:nomi‐nal load and luggage load plus150 lb (68kg)multipliedbythe number of seats inthevehicle.
Changing a wheel
Notes on selecting, installing andreplacingtires
Mercedes-AMGvehicles:observethe notes inthe Supplement. Otherwise,you may notrecog‐nize dangers.
You can askfor informationregarding permittedwheel/tire combinations at an authorizedMercedes-Benz Center.
\nWARNINGRisk of accident duetoincor‐rect dimensions of wheels and tires
If wheels and tires ofthe wrong size areinstalled,the wheel brakes or wheel suspen‐sion components may be damaged.
Alwaysreplace wheels and tires withthosethat fulfillthe specifications ofthe original part.
Whenreplacing wheels, make suretofitthecorrect:
RDesignation
RModel
Whenreplacing tires, make suretoinstallthecorrect:
RDesignation
RManufacturer
RModel
\nWARNINGRisk of injurythroughexceed‐ingthe specified tire loadrating orthepermissible speedrating
Exceedingthe specified tire loadrating orthe permissible speedrating may leadtotiredamageandtothe tires bursting.
Therefore, only use tire types and sizesapprovedforyourvehicle model.
Observethe tire loadrating and speedratingrequiredforyourvehicle.
NOTEVehicle and tire damagethroughtire types and sizesthat havenot beenapproved
For safetyreasons, onlyuse tires, wheelsand accessories which havebeen speciallyapprovedbyMercedes-Benzforyourvehicle.
These tires are specially adaptedtothe con‐
trol systems, such as ABS, ESP®and4MATIC, and marked asfollows:
RMO = Mercedes-Benz Original
Wheels and tires411

RMOE = Mercedes-Benz Original Extended(run-flat tire onlyfor certain wheels)
RMO1 = Mercedes-Benz Original (only cer‐tain AMG tires)
Certaincharacteristics, such as handling,vehicle noise emissions, fuel consumption,etc. mayotherwise be adversely affected.Furthermore,other tire sizes couldresult inthe tiresrubbing againstthe body and axlecomponents when loaded. This couldresultin damagetothe tire orthevehicle.
Only use tires, wheels and accessoriesthathavebeenchecked andrecommendedbyMercedes-Benz.
NOTERisktodriving safety fromretrea‐ded tires
Retreaded tires are neithertested norrecom‐mendedbyMercedes-Benz, since previousdamage cannot always be detected onretreaded tires.
Forthisreason driving safety cannot be guar‐anteed.
Do not use used tires ifyou havenoinformation abouttheir previous usage.
NOTEPossible damagetowheels or tireswhen drivingover obstacles
Large wheels havea lower tire section width.The lowerthe tire section width,the greateristherisk of damagetowheels or tires whendrivingover obstacles.
Avoid obstacles or drive particularlycarefully.
NOTEDamagetoelectronic componentparts fromthe use of tire-mountingtools
Vehicles with a tire pressure monitoringsystem:Electronic component parts arelocated inthe wheel.Tire-mountingtoolsshould not be used inthe area ofthevalve.
This couldotherwise damagethe electroniccomponent parts.
Havethe tireschanged at aqualifiedspecialistworkshop only.
NOTEDamagetosummer tires at lowambienttemperatures
Atlow ambienttemperatures,tears couldformwhen driving with summer tires, caus‐ing permanent damagetothe tires.
Attemperatures below 45 °F (7 °C),use M+S tires .
Accessory partsthat are not approvedforyourvehiclebyMercedes-Benz or are not being usedcorrectly can impairthe operating safety.
Before purchasing and using non-approvedaccessories, visit aqualified specialistworkshopand inquire about:
RSuitability
RLegalstipulations
RFactoryrecommendations
\nWARNINGRisk of accident withhighperformance tires
The special tire tread in combination withtheoptimized tire compound meansthattherisk
412Wheels and tires

of skidding orhydroplaning onwetroads isincreased.
In addition,the tire grip is greatlyreduced ata low outsidetemperature and tirerunningtemperature.
Switch onthe ESP®and adaptyourdrivingstyle accordingly.
Use M+S tire at outsidetemperaturesof lessthan10°C (50 °F).
Observethefollowing when selecting, installingandreplacing tires:
ROnly use tires and wheels ofthe same type(summer tires, winter tires, MOExtendedtires) andthe same make.
ROnly install wheels ofthe same size on oneaxle (left andright).
It is only permissibletoinstall a differentwheel size intheevent of aflat tire in ordertodrivetothe specialistworkshop.
ROnly install tires ofthe correct size ontothewheels.
RVehicles with a tire pressure monitoringsystem:All installed wheels must be equip‐ped with functioning sensorsforthe tirepressure monitoring system.
RAttemperatures below 45 °F (7 °C), use win‐ter tires or all-season tires marked M+Sforall wheels.
Winter tires bearingtheMsnowflake sym‐bol in additiontothe M+S marking providethe best possible grip in wintryroad condi‐tions.
RFor M+S tires, only use tires withthe sametread.
RObservethe maximum permissible speedforthe M+S tires installed.
Ifthis is belowthevehicle's maximum speed,this must be indicatedbyan appropriatelabel inthe driver'sfield of vision.
RBreak in new tires at moderate speedsforthefirst 60 miles (100 km).
RReplacethe tires after sixyears atthe latest,regardless ofwear.
RWhenreplacing with tires that do notfea‐turerun-flatcharacteristics:vehicles withMOExtended tires are not equipped with aTIREFIT kit atthefactory.Equipthevehiclewith a TIREFIT kit afterreplacing with tiresthat do notfeaturerun-flatcharacteristics,e.g. winter tires.
For more information on wheels and tires, con‐tact aqualified specialistworkshop.
Be suretoalso observethefollowing furtherrelated subjects:
RNotes on tire pressure (page 392)
RTireand Loading Information placard(page 399)
RTiresize designation, load-bearing capacity,speedrating and load index(page 406)
RTirepressuretable (page 393)
Wheels and tires413

Notes onrotating wheels
\nWARNINGRisk of injurythrough differ‐ent wheel sizes
Interchangingthe front andrear wheels ifthewheels or tires havedifferent dimensionsmay severely impairthe drivingcharacteris‐tics.
The wheel brakes or wheel suspension com‐ponents may also be damaged.
Rotatefront andrear wheels onlyifthewheels and tires are ofthe same dimen‐sions.
Thewear patterns onthe front andrear wheelsdiffer:
RFront wheelswear more onthe shoulder ofthe tire
RRear wheelswear more inthe center ofthetire
Onvehiclesthat havethe same size front andrear wheels,rotatethe wheels accordingtotheintervals inthe tire manufacturer'swarranty
book inyourvehicle documents. Ifthis is notavailable,rotatethe tiresevery3,000to6,000 miles (5,000to10,000 km),depending onthewear. Ensurethatthe directionofrotation is maintained.
It is imperativetoobservethe instructions andsafety notes on "Changing a wheel" when doingso Preparingthevehiclefor a wheelchange(page415).
Notes onstoring wheels
Whenstoring wheels, observethefollowingnotes:
RAfterremoving wheels,storethem in a cool,dry and preferably dark place.
RProtectthe tires from contact withoil, greaseor fuel.
Overview ofthe tire-changetool kit
Mercedes-AMGvehicles:observethe notes inthe Supplement. Otherwise,you mayfailtorec‐ognize dangers.
Apartfrom some country-specificvariants,vehi‐cles are not equipped with a tire-changetool kit.For more information on whichtire-changetoolsarerequired and approvedfor performing awheelchange onyourvehicle, consult aqualifiedspecialistworkshop.
Yourequirethefollowingtools,for instance,tochange a wheel:
RJack
RChock
RLug wrench
RAlignment bolt
The tire-changetool kit is located underthetrunkfloor.
414Wheels and tires

Seat heatingActivating/deactivating ......................... 98
SeatventilationSwitching on/off................................... 99
Secondtelephone...................................305Connecting .......................................... 305Features .............................................. 305
Selecting agearsee Changinggears
Selector leversee DIRECT SELECT lever
Self-testAutomatic front passenger front air‐bag shutoff ............................................44
Sensors (Care)......................................... 364
Service centersee Qualified specialistworkshop
Service interval displaysee ASSYSTPLUS
Servicestation searchStarting automatic search................... 287
Setting a speedsee Cruise control
Setting summer time.............................. 264
Setting the dateformat.......................... 265
Settingthe distance unit........................ 269
Settingthe map scalesee Map
Shift paddlesseeSteering wheel paddle shifters
ShiftinggearsGearshiftrecommendation ..................157
Short messagesseeText messages
Side airbag.................................................40
Side impact protection...........................201
Side windows............................................. 80Child safety lockintherearpassenger compartment .......................62Closing .................................................. 80Closing usingthe SmartKey................... 82Convenience closingfeature .................82Convenience opening ............................81Opening .................................................80Opening withthe SmartKey...................81Problem .................................................82
Roller sunblind .......................................78
Size designation (tires)........................... 406
Sliding sunroof.......................................... 83Automatic functions .............................. 86Closing .................................................. 83Closing usingthe SmartKey................... 82Opening ................................................. 83Opening with the SmartKey...................81Problem .................................................86Rain closing function .............................86
SmartKey...................................................64Acoustic lockingverification signal ....... 65Battery .................................................. 66Energy consumption .............................. 65Features ................................................64Keyring attachment .............................. 66Mechanicalkey ...................................... 66Overview ...............................................64Panic alarm ........................................... 65Problem .................................................67Unlocking setting .................................. 65
SmartKey functionsDeactivating .......................................... 65
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Tireand Loading Information placard... 399
Tire characteristics................................. 406
Tireinflation compressorsee TIREFIT kit
Tireinformation table.............................399
Tirelabeling.............................................403Characteristics .................................... 406DOT,TireIdentificationNumber (TIN).............................................................404Load index ...........................................406Load-bearing capacity ......................... 406Maximum tire load .............................. 405Maximum tire pressure ....................... 406Overview ............................................. 403Speedrating ........................................ 406Temperature grade .............................. 403TireQuality Grading ............................. 403Tiresize designation ............................406Tractiongrade .....................................403Treadwear grade .................................403
Tireload (maximum)...............................405
Tirepressure................................... 393, 394Checking (manually) ............................ 394
Checking (tire pressure monitoringsystem) ............................................... 396Maximum ............................................ 406Notes .................................................. 392Restartingthe tire pressure losswarning system ................................... 398Restartingthe tire pressure monitor‐ing system ...........................................397Tirepressure losswarning system(function) ............................................. 398Tirepressure monitoring system(function) ............................................. 395Tirepressuretable .............................. 393TIREFIT kit ............................................371
Tirepressure losswarning systemFunction .............................................. 398Restarting ............................................ 398
Tirepressure monitorRestarting ............................................ 397Technical data..................................... 397
Tire pressure monitoring systemCheckingthe tire pressure .................. 396Checkingthe tiretemperature ............ 396Function .............................................. 395
Tire pressure table.................................. 393
Tire Quality Grading................................ 403
TiretemperatureChecking (tire pressure monitoringsystem) ............................................... 396Tirepressure monitoring system(function) ............................................. 395
Tiretread................................................. 390
Tire-changetool kitOverview ..............................................414
TIREFIT kit................................................371Storage location ..................................371Using ...................................................371
TiresChanging hub caps ..............................416Characteristics .................................... 406Checking .............................................390Checkingthe tire pressure (man‐ually) ....................................................394Checkingthe tire pressure (tire pres‐sure monitoring system) ......................396Definitions ...........................................409DOT,TireIdentificationNumber (TIN).............................................................404
524Index

Flat tire ................................................370Installing ..............................................419Load index ........................................... 406Load-bearing capacity ......................... 406Maximum tire load .............................. 405Maximum tire pressure ....................... 406MOExtended tires ................................370Noise ...................................................390Notes on installing ...............................411Overview of tire labeling ......................403Removing .............................................41 8Replacing ......................................411,41 5Restartingthe tire pressure losswarning system ................................... 398Restartingthe tire pressure monitor‐ing system ...........................................397Rotating ...............................................414Selection ..............................................411Snowchains ........................................ 391Speedrating ........................................ 406Storing .................................................414Temperature grade .............................. 403Tireand Loading Information placard.............................................................399Tirepressure (notes) ........................... 392
Tirepressure losswarning system(function) ............................................. 398Tirepressure monitoring system(function) ............................................. 395Tirepressuretable .............................. 393TireQuality Grading ............................. 403Tiresize designation ............................406TIREFIT kit ............................................371Tractiongrade .....................................403Treadwear grade .................................403Unusual handlingcharacteristics ........ 390
ToolseeVehicletool kit
TopTether.................................................. 56
Total distance.......................................... 232Displaying ............................................ 232
Touch Control.......................................... 255On-board computer ............................. 228Operating ............................................ 255Settingthe sensitivity .......................... 256
Touchpad.................................................. 256Activating/deactivating haptic oper‐ationfeedback .................................... 258Operating ............................................ 256
Readingthe handwritingrecognitionaloud ................................................... 257Selecting astation and track ...............258Settingthe sensitivity .......................... 257Switching on/off ................................. 256
Tow-bar system.......................................225
Tow-starting............................................. 386
Towingaway............................................ 382
TowingeyeInstalling .............................................. 385Storage location ..................................385
Towing methods...................................... 381
TrackSelecting (audio mode) ....................... 333
Tractiongrade......................................... 403
Traffic information.................................. 293Displayingthe traffic map ...................294Displaying traffic incidents .................. 295Extending a LiveTraffic Informationsubscription ......................................... 294Issuing hazardwarnings ...................... 295LiveTraffic Information ........................ 294Overview ............................................. 293
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