PORSCHE 911 CARRERA 2003 4.G Owners Manual

Tiredamage,puncture

I>Checktiresforimbeddedmaterial,cuts,punc-
tures,cracksandbulges(sidewall)before
drivingoff.
Incaseoftiredamage,whereitisuncertain
whetherthereisabreakintheplywithallits
consequencesortiredamagecausedbyther-
malormechanicaloverloadingduetolossof
pressureoranyotherpriordamage,werecom-
mendthatthetirebereplacedforsafetyrea-
sons.
Ifonefaultytireisreplaceditshouldbenoted
thatthedifferenceintreaddepthononeaxle
mustnotexceed30%.
Handlinginconsistenciesmayresult.
I>Performavisualinspectionifnecessary.

Tirereplacements

Ifindoubt,contactyourPorschedealeror
PorscheImporterofyourcountry.
Useonlytiremakesandtypestestedby
Porsche.

IfyoudonotuseaPorscherecommended
replacementtire,makesurethatyoupur-
chaseyournewtiresfromareputabletire
dealerandthatthedealercomplieswithall
manufacturerswarningsforthosetires.
Onlytireswiththesamemakeandwiththe
samespecificationcode(e.g."NO","Nl"...)
canbemounted.
Beforemountingnewtires,checkwithyour
Porschedealeraboutthecurrentrelease
status.
Usetireswith"ZR"qualitystandards.
There
arecurrentlynostandardsconcerningtire
strengthatspeedsabove150mph
(240
kmjhJ.
Tiresshouldbereplacednolessthanononeaxleat
thetime.
Onlytiresofthesamemakeandtypemustbeused.
Mixedtiresarenotpermissible.
Initially,newtiresdonothavetheirfulltraction.
Youshouldthereforedriveatmoderatespeeds
duringthefirst
60-120
miles(100-200kmJ.
Ifnewtiresareinstalledonlyononeaxle,ano-
ticeablechangeinhandlingoccursduetothe
differenttreaddepthoftheothertires.
Thishappensespeciallyifonlyreartiresarere-
placed.However,thisconditiondisappearsas
thenewtiresarebrokenin.
I>Pleaseadjustyourdrivingstyleaccordingly.
Installationofnewtiresshouldonlybedoneby
aqualifiedtiretechnician.

Valves

Rubbervalvestemsmustbereplacedevery
timeatireisreplaced.
Forsteelvalves,theinstallationandreplacement
instructionsmustbeobserved.
UseonlygenuinePorschesteelvalves.

Parkingatthecurb
A
Warning!
Hardimpactsagainstcurbs(ortraffic
islands)aredangerousandmaycausehid-
dentiredamagewhichisnotnoticeable
untillater.Suchdamagecanresultinacci-
dentsathighspeedscausingsevereper-
sonalinjury.
Dependingontheforceofimpact,theedge
oftherimcanalso
bedamaged.
I>Ifyouareindoubt,havethewheelchecked
byanexpert,particularlyifyoususpectdam-
ageontheinside.
I>Ifyoumustdriveoveracurborotherob-
stacle,driveslowlyandatanobtuseangle.
Exercisecarewhenparkingalongcurbs.
PracticalTips,EmergencyService
201

Wheelalignment,wheelbalancing

Alsoreferto"Four-Wheeldrive".
Asaprecaution,havewheelswithsummertires
balancedinthespring,andthosewithmudand
snowtiresbeforewinter.
Unbalancedwheelsmayaffectcarhandlingand
tirelife.
Onlythespecifiedweightsmaybeusedfor
wheelbalancing.
Self-adhesiveweightsmustnotcomeintocon-
tactwithcleaningagents,sincetheycoulddrop
off.
Awheelshouldalwaysbebalancedafteratire
repair.
Uneventreadwearindicateswheelimbalance.In
thisevent,thevehicleshouldbecheckedatan
authorizedPorschedealer.
/!\.Warning!
If,duringajourney,unevenrunningorvi-
brationsoccurthatcouldbecausedby
damagetotiresorthecar,thespeedmust
bereducedimmediately,butwithoutbrak-
ingsharply.
Ifyoucontinueyourtripwithouthavingthe
causeofthefaultremedied,youmightlose
controlofyourvehiclewhichcouldcause
severepersonalinjury.
I>Stopthevehicleandcheckthetires.
202PracticalTips,EmergencyService
I>Ifnocauseforthefaultcanbefound,drive
carefullytothenearestauthorizedPorsche
dealer.

Removingandstoringtires

I>Afterchanging,adjusttirepressureand
torquewheelboltsdiagonallyto94ftlb
(130

Nm).
See"Changingwheels".

Tiresmustalwaysremainonthesameside
ofthevehicle.

Whenwheelsareremoved,thedirectionofrota-
tionandpositionofeachwheelshouldbe
marked.
Example
FR(frontright),FL,RRandRL.
Wheelsmustalwaysbefittedinaccordancewith
theirmarking.
Thepreceptionthattiredurabilityandperfor-
manceareimmunetotheeffectsofstorageand
ageisunfounded.
Chemicaladditives,whichmaketherubberelastic,
losetheireffectivenessinthecourseoftimeand
therubberbecomesbrittleandcracks.

Therefore,thetires,especiallythespare
tire,shouldbeinspectedfromtimetotime.
Note

Undernocircumstancesshouldtiresolderthan
6yearsbeusedonyourPorsche.
Theageofthetirecanbeobtainedfromthe
"DOT"codenumber.If,forexample,thelast
threenumbersread1202,thenthetirewaspro-
ducedinthe12thweekof2002.

Storetiresinacoolanddryplace.
Snowtires

Forabettergriponsnowandice,useradialM+S
tireswithstuds.
CheckwithyourlocalMotorVehicleBureaufor
possiblerestricTIons.

/!\.Warning!
Riskoflossofcontrolanddamagetothe
vehicleaswellasseverepersonalinjury.
Thestandardtiresprofileandrubbermix-
tureareoptimizedforwetanddrydriving
conditions,andmaynotprovefavorablefor
snowconditions.

I>ThereforeinstallM+Stiresbeforedrivingin
suchconditions.

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

Jack,Tools

/!\Warning!
Thejackmustbeusedonlytoraisethecar
forwheelchanging.
Thejackmustneverbeusedasasupport
toworkunderneaththevehicle.Ifthejack
isaccidentallydislodged,youorbystanders
couldsufferseverepersonalinjury.

I>Neverjackupothervehiclesorotherloads
withthejack.
I>Alwaysplacethecaronstablesupportsifyou
havetoworkunderit.
Whenworkingunderthevehicle,alwaysuse
safetystandsspecificallydesignedforthis
purpose.
Seechapter"ChangingWheels".
204PracticalTips,EmergencyService
911Carrera,Targa

911CalTera,
Targa
Thejackandtoolsarelocatedonthereverse
sideofthesparewheel.
Thefoaminsertofthesparewheelcanbeused
asakneerestwhenchangingwheels.
911Carrera4,Carrera
45
911Carrera4,CalTera
4S
Thejack,tools,compressorandpressuretester
arelocatedinthesparewheel.

LiftingtheVehiclewithaLifting
PlatformorGarageLift
Thecarmustberaisedonlyattheillustrated
jackingpoints.Seechapter"ChangingWheels".
Liftingatanyotherplacemaydamagethe
vehicleormayresultinpersonalinjury.
A.Caution!
Riskofseriousdamagetotheengineor
thevehicle.
I>Neverliftthevehiclebytheengine,trans-
missionoraxles.
I>Don'tdamageanysensitivecomponentsin
thevicinityofthejackingpoints.

Platfonn
lift
Beforethecarisdrivenontoaliftingplatform,
itmustbeensuredthatthereisenoughspace
betweentheliftingplatformandthevehicle.
Garagelift
Agarageliftmustbeusedonlyattheillustrated
jackingpoints.
Jackingatanyotherplacemaydamagethe
vehicleormayresultinpersonalinjury.
PracticalTips,EmergencyService
205

Spare
Wheel
Thesparewheelissecuredintheluggagecom-
partmentwithwingnuVwingscrewA.
Thereisaplasticsheetinthetoolpocketto
storethedamagedwheel.

Importantnote

Followallwarningsandinstructionsfoundinthis
manualforchangingawheel.
206PracticalTips,EmergencyService
911Carrera,Targa911Carrera4,Carrera45
911
CalTera,
Targa911Carrera
4,
CalTera4S
The911Carrera4isequippedwithacollapsible
sparewheelthatmustbeinflatedwiththeelec-
tricalcompressorwhenneeded.

Tirepressure:36psi(2.5bar).

I>Checkthepressureofthesparewheelregu-
larly:60psi(4.2bar).

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

WheelBolts
/!\Warning!
Riskofwheelboltbreakageandwheelsep-
aration,resultinginseverepersonalinjury
ordeath.
[>
Followallinstructionsconcerningwheelbolts.
208PracticalTips,EmergencyService
[>Alwayscleanthewheelboltsbeforefitting.
[>ApplyathincoatofOptimolyTA(aluminium
paste)onthethreadandbetweenthebolt
headandmovablesphericalcapring(arrows).
Thebearingsurfaceofthesphericalcap
facingthewheelmustnotbegreased.
[>Replacedamagedwheelbolts.
OnlyusetheOriginalPorschewheelbolts
speciallydesignedforthisvehicletype.
Note
Onvehicleswith17mmspacerringsonthe
rearaxle,thewheelsaresecuredwithnuts.

Tighteningtorque

Tighteningtorqueofwheelboltsandwheelnuts:
130Nm.

WheelSecuringBolts

Thewrenchsocketforthewheelsecuringbolts
isinthetoolpocket.
Toloosenortightenthewheelboltwithanti-theft
protection,awrenchsocketwiththeappropriate
codingmustbeusedbetweenthewheelbolt
andthewheel-boltspanner.
[>Whenpositioningthewrenchsocket,ensure
thatitengagesfullyintheteethofthewheel
bolt.
Ifthewheelshavetoberemovedatthework-
shop,pleasedonotforgettohandoverthe
wrenchsocketforthewheelsecuringbolts
alongwiththecarkey.

ChangingWheels

A
Warning!
Failure
to
followtheseinstructionsmayre-
sultinseriouspersonalinjuriestoyouorto
bystanders.
Beforechangingthewheel
I>Ifyouhaveaflattire,moveasafedistance
offtheroad.
Turntheemergencyflasheron
anduseotherwarningdevicestoalertother
motorists.
I>Donotparkyourvehiclewhereitmaycontact
drygrass,brushorotherflammablema-
terials.Thehotpartsoftheexhaustsystem
could
set
suchmaterialsonfire,thereby
causingbothpropertydamageandsevereor
fatalphysicalinjury.

I>
Passengersmustnotremaininthevehicle
whenitisjacked
up.
I>Before
youchangeawheel,besurethe
groundislevelandfirm.Ifnecessary,usea
boardunderthejacktoensurethatthejack
doesnotsinkintotheground.

I>Setthe
parkingbrakeandblockthewheels
oppositetheflattireontheothersideofthe
vehicle.
While
operatingthejack
I>The
jackisonlytobeusedforchanginga
wheel.Donotuseitasasupporttowork
underthecar.
I>Thecarmustbejackeduponlyattheillus-
tratedjackingpoints.
Liftingatanyotherplacemaydamagetheve-
hicleormayresultinpersonalinjury.
Neverjackthecarupbythebodyorthe
bumpers.

I>Forsafety
reasonsdonotusetireinflating
bottles.
Donotusecommerciallyavailablesealant
bottles.

Sequence
ofoperation
A

Warning!
Thejackmustbeusedonlytoraisethecar
forwheelchanging.
Thejackmustneverbeusedasasupport
toworkunderneaththevehicle.Ifthejack
isaccidentallydislodged,youorbystanders
couldsufferseverepersonalinjury.

I>Neverjackupothervehiclesorotherloads
withthejack.
I>Alwaysplacethecaronstablesupportsifyou
havetoworkunderit.
Whenworkingunderthevehicle,alwaysuse
safetystandsspecificallydesignedforthis
purpose.
Pleaseuseasuitablekneeresttoprotectyour
clothingagainstsoiling.
I>I>I>
PracticalTips,EmergencyService
209

Jackingpointforfrontwheelchange
1.Slightlyloosenthewheelboltsofthewheel
tobechanged.
2.Setupjackonlyatthepointsprovided.
Thejackfootmustbeincontactoverits
wholearea.
Useasuitablesupportifnecessary.
3.Holdjackstillandwinditupuntilitshead
entersthejackingpointonthecar.
Onlyjackcarupuntilthewheeltobe
changediscompletelyofftheground.
210PracticalTips,EmergencyService
Jackingpointforrearwheelchange
4.Removetopwheelboltandscrewinassem-
blyaidfromthetoolkit.
Removetheremainingwheelbolts.
5.Changewheel.
6.Pleasenotechapter"Wheelbolts".
Insertfourwheelboltsandtightenbyhand.
Removeassemblyaid,screwinremaining
bolt.
Initiallytightenscrewsindiagonallyopposite
sequencesothatthewheeliscentered.
Referto"Spacerrings"and"Collapsiblespare
wheel"ifnecessary.
Screwinginassemblyaid
7.Lowercarandremovejack.
8.Tightenwheelboltsindiagonallyopposite
sequence.
Importantnote
Immediatelyafterchangingawheel,adjustthe
tirefillingpressure(refertoPage5)andusea
torquewrenchtochecktheprescribedtighte-
ningtorqueofthewheelbolts(130Nm).