
Tires/Wheels
TheoriginalequipmenttiresandwheelrimsonyourPorschecomplywithallapplicableFederalMotorVehicleSafetyStandards.
Foryoursafetyrememberthefollowing:
–WheelrimsandwheelboltsarematchedtofityourPorsche.
–Ifyouintendtouseotherthanoriginalequip-mentwheels,besurethattheyconformtoPorschespecificationsforyourmodel.Onlytireswiththesamemakeandwiththesamespecificationcode(e.g.“N0”,“N1”...)canbemounted.
–Theuseofwheelrimsandwheelboltsthatdonotmeetspecificationsoftheoriginalfactoryinstalledequipmentwillaffectthesafeoperationofyourvehicle.
–Beforeyouplanonexchangingwheels,orsnowtiresalreadymountedonthewheelrims,consultyourauthorizedPorschedealer.Yourdealerhasthetechnicalinformationnecessarytoadviseyouwhichwheelrimsandwheelboltsarecompatiblewiththeoriginalfactoryinstallations.
Danger!
Riskoflossofcontrolandseriouspersonalinjuryordeath.
Ifwhiledriving,yourvehicleexperiencesasuddenvibrationorridedisturbance,and/oryoususpectthatpossibledamagetoyourtiresorvehiclehasoccurred,youshouldimmediatelyreduceyourspeedwithoutexcessiveuseofthebrakes.
Stopthevehicleassoonaspossible,andinspectthetires.Ifyoucannotdeterminethecauseforthedisturbance,haveyourvehicletowedtothenear-estPorscheortiredealertohaveyourvehicleortire(s)inspected.
Continuingtooperatethevehiclewithoutcorrectioncouldresultinalossofcontrolandseriouspersonalinjury.
Example
UniformTireQualityGrading
Qualitygradescanbefoundwhereapplicableonthetiresidewallbetweentreadshoulderandmaximumsectionwidth.
AllpassengercartiresmustconformtoFederalSafetyRequirementsinadditiontothesegrades.
Treadwear
Thetreadweargradeisacomparativeratingbasedonthewearrateofthetirewhentestedundercontrolledconditionsonaspecificgovernmenttestcourse.Forexample,atiregraded150would
PracticalTips,EmergencyService237

Tirewear
TheoriginalequipmenttiresonyourPorschehavebuilt-intirewearindicators.Theyaremoldedintothebottomofthetreadgroovesandwillappearasapproximately1/2in.(12mm)bandswhenthetiretreaddepthisdownto1/16ofanin.(1.6mm).
Whentheindicatorsappearintwoormoreadjacentgrooves,itistimetoreplacethetires.Werecommend,however,thatyoudonotletthetiresweardowntothisextent.Worntirescannotgriptheroadsurfaceproperlyandareevenlesseffectiveonwetroads.
IntheUnitedStates,statelawsmaygoverntheminimumtreaddepthpermissible.Followallsuchlaws.
Danger!
Drivingonworntirescanresultinlossofcontrolofthevehicleandcouldcauseseriouspersonalinjuriesordeath.
Donotdrivewithworntiresortiresshowingcutsorbruisesastheymayleadtosuddendeflationandlossofcontrolwhichcouldcauseseverepersonalinjury.
Specializedhighperformancetiresonhighperformancesportscarsexhibitmorewearthanthoseonafamilysedan,orevenahighperformancesedan.Therefore,itisimportanttocheckyourtirepressureandconditionatleasteverytwoweeks.
Ifyounoticethattiresarewearingunevenly,consultyourPorschedealer.Unevenwearmaynotalwaysbeduetoimproperwheelalignment.Itcanbetheresultofindividualdrivinghabitssuchascorneringathighspeeds.Ifthetirepressureisnotcheckedandadjustedregularly,abnormaltirewearcanalsooccur.
Tirecare
Avoiddamagingtiresandwheelrims.
Ifyoumustdriveoveracurborotherobstacle,driveslowlyandatanobtuseangle.
Checktiresforunevenwearanddamagebeforedrivingoff.
Removeimbeddedmaterial.
Replacewornordamagedtiresimmediately.
Keepoil,fuel,brakefluid,etc.awayfromtires.
Replacemissingvalvestemcaps.
Keeptiresinflatedcorrectly.
Washtireswhenwashingthevehicle.Alsocleaninnersideofwheels.
Donotuseabrasivecleanerswhenwashingthewheels.
Checkwheelrimsforcorrosion.
Removeroadsalt,ifdrivinginwinter.
Tiredamage,puncture
Checktiresforimbeddedmaterial,cuts,punctures,cracksandbulges(sidewall)beforedrivingoff.
Incaseoftiredamage,whereitisuncertainwhetherthereisabreakintheplywithallitsconsequencesortiredamagecausedbythermalormechanicaloverloadingduetolossofpressureoranyotherpriordamage,werecommendthatthetirebereplacedforsafetyreasons.
Ifonefaultytireisreplaceditshouldbenotedthatthedifferenceintreaddepthononeaxlemustnotexceed30%.Handlinginconsistenciesmayresult.
Performavisualinspectionifnecessary.
Danger!
Riskofseriouspersonalinjuryordeath.Drivingthevehiclewithlowtirepressureincreasesriskofatirefailureandresultinglossofcontrol.Furthermore,lowtirepressureincreasesrateofwearoftheaffectedtires.
Checktires-includingsidewalls-regularlyforforeignbodies,nicks,cuts,cracksandbulges.
PracticalTips,EmergencyService241

LoadingInformation
Denitions
TheCurbweight-actualweightofyourvehicle-vehicleweightincludingstandardandoptionalequipment,fluidsandemergencytools.Thisweightdoesnotincludepassengersandcargo.
TheGrossVehicleWeightissumofthecurbweightandtheweightofpassengersandcargocombined.
TheGrossVehicleWeightRatingisthemaxi-mumtotalweightofvehicle,passengers,luggageandoptionalequipment.
TheGrossAxleWeightRatingisthemaximumloadlimitforthefrontortherearaxle.Thisinformationislocatedonthesafetycompliancestickerlocatedinthedriver’ssidedoorjamb.
Fordeterminingthecompatibilityofthetireandvehicleloadcapabilities:
Pleaseobservethechapter”TIRES,RIMS,TRACKS”onpage298.
Theloadcapacitycoefficient(e.g.“101”)isaminimumrequirement.
TheGrossCombinedWeightRatingisthemaxi-mumtotalweightratingofvehicle,passengersandcargo.
TheVehicleCapacityWeight-LoadLimit-isthemaximumtotalweightlimitspecifiedoftheload(passengersandcargo)forthevehicle.Thisisthe
maximumweightofpassengersandcargothatcanbeloadedintothevehicle.Thisinformationcanbefoundonthetirepressureplate.
Themaximumloadedvehicleweightisthesumofcurbweight,accessoryweight,vehiclecapacityweightandproductionoptionsweight.
Theloadratingisthemaximumloadthatatireisratedtocarryforagiveninflationpressure.
Themaximumloadratingistheloadratingforatireatthemaximumpermissbleinflationpressure.
Thecargocapacityisthepermissibleweightofcargo,thesubtractedweightofpassengersfromtheloadlimit.
Neverexceedthepermissiblelimits.
Danger!
Riskoflossofcontrol,damagetovehicleandseriouspersonalinjuryordeath.
Neverexceedthespecifiedaxleloads.Overloadingcanshortentheservicelifeofthetiresandcar,aswellasleadtodangerousvehiclereactionsandlongbrakingdistances.Damageduetooverloadingisnotcoveredbythevehiclewarranty.
Examplefordeterminingthecombinedweightofoccupantsandcargo
VehicleLoadCapacity
Thecombinedweightofoccupantsandcargoshouldneverexceedtheweightshownonthetireplateinthevehicle.
Pleaseobservethechapter”TIREPRESSUREPLATE”onpage240.
Neverexceedthenumberofpassengersshownonthetirepressureplateinthevehicle.
248PracticalTips,EmergencyService

Tires,Rims,Tracks
CaymanTireRimRimoffsetTrack
Summertiresfront205/55ZR17(91Y)6.5Jx17H255mm58.7in./1490mm
rear235/50ZR17(96Y)8Jx17H240mm60.4in./1534mm
orfront235/40ZR18(91Y)8Jx18H257mm58.5in./1486mm
rear265/40ZR18(101Y)XL9Jx18H243mm60.2in./1528mm
orfront235/35ZR19(87Y)8Jx19H257mm58.5in./1486mm
rear265/35ZR19(94Y)9.5Jx19H246mm60.0in./1522mm
Snowtiresfront205/55R1791VM+S6.5Jx17H255mm58.7in./1490mm
rear235/50R1796VM+S*8Jx17H240mm60.4in./1534mm
orfront235/40R1891VM+S8Jx18H257mm58.5in./1486mm
rear255/40R1895VM+S*9Jx18H243mm60.2in./1528mm
VehicleIdentification,TechnicalData297

Tires,Rims,Tracks
CaymanSTireRimRimoffsetTrack
Summertiresfront235/40ZR18(91Y)8Jx18H257mm58.5in./1486mm
rear265/40ZR18(101Y)XL9Jx18H243mm60.2in./1528mm
orfront235/35ZR19(87Y)8Jx19H257mm58.5in./1486mm
rear265/35ZR19(94Y)9.5Jx19H246mm60.0in./1522mm
Snowtiresfront235/40R1891VM+S8Jx18H257mm58.5in./1486mm
rear255/40R1895VM+S*9Jx18H243mm60.2in./1528mm
Theloadcapacitycoefficient(e.g.“91”)andmaximumspeedcodeletter(e.g.“V”)areminimumrequirements.Pleaseobservethechapter”TIRES/WHEELS”onpage237.
Danger!
InstallationofsizesnotauthorizedbyPorschemayhaveadangerouseffectonthedrivingstabilityandcouldresultinseverepersonalinjuryordeath.
Beforemountingnewtires,checkwithyourPorschedealeraboutthecurrentreleasestatus.
TireandrimsizesExtensivetestsareperformedbeforespecifictiresandwheelsareapprovedbyPorsche.YourPorschedealerhasinformationaboutapprovedtiresandwheelsandishappytoassistyou.Ifaftermarkettiresand/orwheelsareinstalledwhicharenotapprovedbyPorsche,thevehicle’sdriveability,stabilitywhileinmotionandhandlingcharacteristicsmightbeimpaired.SincePorschehasnodataonsuchcombinations,Porschecannotstandbehindthesafetyordurabilityoftheseaftermarketcombinations.
Snowchains*Canbemountedonlyontherearwheels;maximumspeed30mph/50km/h.UseonlyPorscheauthorizedfine-linkcross-typeoredgechains.Snowchainclearancecanbeguaranteedonlywiththetire+rimcombinationmarked.
298VehicleIdentification,TechnicalData

Powermeasurements..................................202Powersteeringfluidlevel......................224,301Powerwindows.......................................31,34Practicaltips...............................................236
RRadiatorfans..............................................206Radioreception...........................................185Rainsensor................................................151Rangeonremainingfuel.......................106,137Rearfoglight......................................147,279Rearlid......................................................178Rearviewmirrors..........................................36Rearwindowdefogger...................................38Rearwiper..................................................152Replacing.............................................204Relays........................................................259Releasebutton............................................195Remotecontrol.............................................23Replacementkey...........................................22Replacingbulbs...........................................270Replacingwiperblades................................203Retractablerearspoiler.................................77RimsDiameter..............................................247Rimwidth.............................................247Roofload....................................................191RoofTransportSystem........................191,302Runningin.....................................................19
SSafetyBeltWarninglight...........................................50Safetybelts....................................49,51,233Safetycompliancesticker............................292Sealingset.................................................250Seals,careof.............................................232Seat............................................................40Adjustment.......................................40,41Heating..................................................45Memory.................................................43Selectorlever.............................................195Selectorleverpositionindicator......98,196,197Serviceflap................................................179Shiftinggear...............................................194Shiftlock.....................................................195Sidelights..................................................279Sidemarkerlight.................................147,278Sidestoragecompartments.........................168Sidevents..................................................162Snowchains...............................245,298,299Snowtires..........................................244,298Sockets.....................................................166Spacers.....................................................257Sparekey.....................................................22Sparewheel................................................299Speedcodeletter........................................246Speedcontrol...............................92,153,156Speedlimit.........................................108,246Speedometer...............................................95Spoiler.........................................................77Sportmode......................................72,74,76
Sportsexhaustsystem..................................71Sportsseat..................................................40Stabilitymanagementsystem(PSM)................73Starting..................................................83,84Startingandstoppingtheengine.....................83SteeringwheelAdjustment.............................................46Buttons..................................................47Lock..........................................83,85,87Rockerswitches...................................195Toggleswitches....................................195Stopwatch..................................................115Storageoptions..........................................167StoringyourPorsche...................................234Sunvisors....................................................48
TTachometer..................................................96Taillight......................................................279Tank..................................................216,217Cap.....................................................217Ventilationsystem.................................222Telephone..................................................186Temperaturesetting............................156,159Temperature,outsideindicator.....................100Teststand,measurements.............................75Theftprotection............................................21Tie-downrings............................................179Tiptronic....................................................195Indicator................................................98Tirefillingcompressor.................................176TirePressureMonitoring..............................122
Index311