2003 PORSCHE 911 CARRERA tires

Beforemountingsnowtires,consultwith
yourPorschedealer.Hehasthetechnical
informationnecessarytoadviseyouon
wheelandtirecompatibility.
Snowtiresshouldhavethesameloadcapacityas
originalequipmenttiresandshouldbemountedon
allfourwheels.
Snowtireswithstudsshouldberunatmoderate
speedswhennewinordertogivethestudstime
tosettle.
A
Warning!
Tireswithbadlyworntreadsandstudsare
verydangerousandcouldcauseaccidents
resultinginseverepersonalinjuries.
[>
Makesuretheyarereplacedimmediately.
Donotdriveavehicleequippedwithsnowtires
atprolongedhighspeed.
Snowtiresdonothavethesamedegreeoftrac-
tionondry,wetorsnowfreeroadsasanormal
tire.
Furthermore,snowtireswearrapidlyunder
theseconditions.
Snowtiresdonotfulfilltheirpurposeifthetread
depthislessthan
5/32
in(4mm).
Complywithallstateandlocallaws
governingsnowtireandtreaddepth
requirements.
Snowchains
ACaution!
Riskofdamagetobody,axleorbrake
components.
[>
Fitsnowchainsonlytotherearwheels,and
onlywiththetire/rimcombinationlistedinthe
TechnicalData.
Toensureadequateclearancebetweenchain
andbody,Porscherecommendsonlytheuse
offine-linkchainssuchasthoseapprovedby
Porsche.
[>
Followinstructionsissuedbythesupplierof
thechains.
Differentstatesandcountrieshavevaryingstatu-
toryrequirementsregardingmaximumspeed.
Checkwithlocalauthoritiesforpossiblerestric-
tions.
[>
Removechainsassoonastheroadsarefree
oficeandsnow.
Tiredesignations
Duetonewspeedandloadratingsforradial
tires,newdesignationshavecomeintoforcefor
snowtiresforyourPorsche.
ThedesignationtobeusedforZRtiresise.g.,

255/40
ZR17(Z
=
codeletterforradialtires
forspeedsabove150mph(240km/h).
PracticalTips,EmergencyService
203

A.Warning!
Riskofanaccident.
Forsafetyreasons,thefollowinginstruc-
tionsfortheuseofthesparewheelmust
befollowedexactly.
I>Refertothechapter"Spacerrings"before
fittingthesparewheel.
Ifincorrectlyfitted,thesparewheelmay
comeoffwhilstdriving.
I>Checkthetirefillingpressureimmediately
afterfittingthesparewheel.
I>Thesparewheelmustbeusedonlyover
shortdistancesincasesofemergency.
Afterrepairorreplacement,re-mountthe
roadwheelandtireassoonaspossible.
I>Avoidrapidacceleration,hardbrakingand
highcorneringspeedstopreventlossofve-
hiclecontrol.
Themaximumpermittedspeedis50mphj
80km/handmustnotbeexceededbecause
ofaltereddrivingcharacteristicsandforrea-
sonsofwear.
Thetreaddepthofthesparewheelissubject
tothesamelawsastheoriginaltires.
I>Thevehiclemustbefittedwithonlyone
sparewheel.
I>Donotuseasparewheelfromothervehicles
onyourcar.
Likewise,thesparewheelfromyourvehicle
mustnotbeusedonothercars.
I>Toavoiddamage,donotuseautomaticcar
washeswhenthesparewheelisinstalled.

Spacer
Rings
A.Warning!
Risk
of
accident.
Ifincorrectlyfitted,the
sparewheelmaycomeoffwhiledriving
whichcouldresultinseriouspersonalinjury
ordeath.
I>5mmspacerringsonfrontandrear
axles:
If5mmspacer
ringsarefittedtothewheel
hubs,
donotremove
thesebeforefittingthe
sparewheel.

I>17mmspacerringsonrearaxle:
If17mmspacer
ringsarefittedtothewheel
hubs,theappropriatespacerringmustbe
removedbeforethesparewheelisfitted.
Tomountthesparewheel,usethewheel
boltswhichwereusedtofastenthespacer
ring.
PracticalTips,EmergencyService
207

Tires,Rims,Tracks
911Carrera,Carrera
4
TireRimRimoffsetTrack
Summertires
front
205/50ZR177Jx17H250mm57.7
in./1465mm
rear
255/40ZR179Jx17H255mm59.1in./1500mm
orfront225/40ZR188Jx18H250mm57.7in./1465mm
52mm57.3in./1461
mm
rear
285/30ZR1810Jx18H265mm58.3in./1480
mm
orfront
225/40ZR188Jx18H250mm57.7in./1465
mm
rear
295/30ZR1811Jx18H263mm58.4in./1484mm
Snowtires
front
205/50R1789TM+S7Jx17H250mm57.7in./1465
mm
rear
*255/40R1794TM+S9Jx17H255mm59.1in./1500mm
or
front
225/40R1888HM+S7.5Jx18H250mm57.7in./1465mm
225/40R1888HM+S8Jx18H250mm57.7in./1465mm
52mm57.3in./1461
mm
rear
*265/35R1893HM+S10Jx18H265mm58.3in./1480
mm
Theloadcapacitycoefficient
(e.g."88")andmaximum
speedcodeletter(e.g."H")areminimumrequirements.
246TechnicalData

911Carrera
45
TireRim
Summertires
front
225/40ZR188Jx18H2

rear
295/30ZR1811Jx18H2
or
rear
295/30ZR1811Jx18H2
Snowtires
front
225/40R1888HM+S8Jx18H2

rear
*265/35R1893HM+S10Jx18H2
RimoffsetTrack
50mm57.9in./1472mm
45mm60.2in./1528mm
63mm(onlywith17mm
spacer
ring)
60.1in./1526mm
50mm
47mm
57.9in./1472mm
60.0in./1524mm
Theloadcapacitycoefficient(e.g."88")andmaximumspeedcodeletter(e.g."H")areminimumrequirements.

A
Warning!
Installationofsizesnotauthorizedby
Porschemayhaveadangerouseffecton
thedrivingstabilityandcouldresultin
severepersonalinjuryordeath.
[>

Beforemountingnewtires,checkwithyour
Porschedealeraboutthecurrentrelease
status.

[>[>[>
TechnicalData
247

Tire
andrimsizesExtensivetestsareperformedbeforespecifictiresandwheelsareapprovedbyPorsche.
YourPorschedealerhasinformationaboutapprovedtiresandwheelsandishappytoassistyou.
Ifaftermarkettiresand/orwheelsareinstalledwhicharenotapprovedbyPorsche,thevehicle'sroadabilityandhandling
characteristicsmightbeimpaired.SincePorschehasnodataonsuchcombinations,Porschecannotstandbehind
thesafetyordurabilityoftheseaftermarketcombinations.
SnowchainsCanbemountedonlyontherearwheels;maximumspeed30mph/50km/h,
UseonlyPorscheauthorizedfine-linkcross-typeoredgechains.
Snowchainclearancecanbeguaranteedonlyonthetire+rimcombinationmarked*,
Sparewheel911Carrera:T105/95R17high-pressuretireon3.5Jx17rim.
911Carrera4,Carrera4S:165/70R1692Pcollapsibletireon5.5Jx16rim.
Maximumspeed50mph/80km/h,Alwayscomplywiththeinstructionsinthechapter"Sparewheel",
248TechnicalData

Tire
Pressuresforcoldtires
Summertiresandsnowtires
Front17inchwheels:
18inchwheels:
36psi(2.5bar)overpressure
36psi(2.5bar)overpressure
Rear17inchwheels:
18inchwheels:
36psi(2.5bar)overpressure
44psi(3.0bar)overpressure

Spare
wheel911Carrera
Frontandrear60psi(4.2bar)overpressure
Collapsiblesparewheel911Carrera4,Carrera4S
Frontandrear36psi(2.5bar)overpressure
ThesetirepressuresapplyonlytothetiremakesandtypesapprovedbyPorsche.
Alwaysobserveinstructionsinthechapter"TiresandTireCare",
TechnicalData
249

Diagrams
Accelerationdiagram
ValueshavebeendeterminedatDINempty
weightandwitha50%loadwithout
additionalequipment.
Transmissiondiagram
Thetransmissiondiagramisbasedon
standardvaluesonthebasisofamean
effectivescrubradius.Changesofthescrub
radius,thetiretolerance,wearandtear,
deviatingcountryequipmentandtireslip
havenotbeentakenintoaccount.
TechnicalData
255

T
Tachometer75
Taillight231
Tank176,177,250
-Ventilationsystem181
Targaroof160-165
Technicaldata244-258
Telephone126
Temperaturesetting105-109
Theftprotection16
Tiptronic77,129-134,183
Tires14,197-204,246-249
-Pressure5,199,249
-Pressurecompressor121
Tiresandtirecare197-204
Toolkit120,121
Towing238,239
Track246
Transmission128-134,254
-Fluid183,250
Tripcounter73
Trunkentrapment123
Turnsignals75,101,228,231
u
Undercoating179,189
v
Valves201
Vanitymirror31
Vehicle
-Care185-193
-Data242,243
-Identificationlabel242
-Identificationnumber120,242
-Washing185-193
Ventilation106-109
Vents106-109
Voltmeter72
w
Warninglamps68-71
Warningmessages92-97
Washerfluid181,250
Washing185-193
Weights251-253
Wheel
-Changing209-211
-Bolts17,208
Wheels191,197-204,246-249
Windows26,27,140,189
-Washernozzles102
-Washersystem102,181,250
Windshieldwiper/washerlever102
Windshieldwipers102,103,184
-Replacing184
Windstop150-153
Wiper
-Blades184
-Interval102,103
Winteroperation:
-Battery217
-Coolant169,170
-Engineoil170-173
-Jumpercables220,221
-Locks187
-Seals190
-Snowchains203,248
-Tires197-204,246-249
-Washerfluid181
-Wiperblades184
Index
263