change wheel PORSCHE 911 GT3 2004 5.G Owners Manual

Inthe driver's seat...

c>
Check operation ofthe horn.

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Position seatforeasy reach offoot pedals and
controls.
To reduce thepossibility ofinjury fromthe
airbag deployment, youshould always sitback
as far from thesteering wheelasispractical,
while stillmaintaining fullvehicle control.

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Adjustthe insideandoutside rearview mirrors.

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Buckle yoursafety belts.

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Check operation ofthe foot andparking brake.

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Check allwarning andindicator lightswith
ignition onand engine notrunning.

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Start engine andcheck allwarning displays for
warning symbols.

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Never leaveanidling carunattended.

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Lock doors frominside, especially withchil-
dren inthe cartoprevent inadvertent opening
of doors frominside oroutside.
Drive withdoors locked.
On
the road ...

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Never driveafteryouhave consumed alcohol
or drugs.

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Always haveyoursafety beltfastened.

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Always drivedefensively.
Expect theunexpected.

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Use signals toindicate turnsandlane changes.

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Turn onheadlights atdusk orwhen thedriving
conditions warrantit.

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Always keepasafe distance fromthevehicle
in front ofyou, depending ontraffic, roadand
weather conditions.

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Reduce speedatnight andduring inclement
weather. Driving inwet weather requirescautionandre-
duced speeds, particularly onroads with
standing water,asthe handling characteristics
of the vehicle maybeimpaired duetohydro-
planing ofthe tires.

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Always observe speedlimitsandobey road
signs andtraffic laws.

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When tired,getwell offthe road, stopandtake
a rest. Turntheengine off.Donot sitinthe ve-
hicle withengine idling.
Please observe thechapter "ENGINE EX-
HAUST" onPage 10.
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When parked, alwayssetthe parking brake.
Move thegearshift levertoreverse orfirst
gear.
On hills also turnthefront wheels towardthe
curb.

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When emergency repairsbecome necessary,
move thevehicle welloffthe road. Turnonthe
emergency flasheranduseother warning de-
vices toalert other motorists. Donot park or
operate thevehicle inareas where thehotex-
haust system maycome incontact withdry
grass, brush,fuelspill orother flammable ma-
terial.

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Make itahabit tohave theengine oilchecked
with every fuelfilling.
Controls, Instruments

Keys

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Please observe thechapter "ALARM SYSTEM,
INFRARED PASSENGER COMPARTMENT MON-
ITORING" onPage 24.

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Please observe thechapter "CENTRAL LOCK-
ING" onPage 22.
Two main keysandonespare keyaresupplied
with your Porsche.
These keysoperate allthe locks onyour vehicle.

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Becareful withyour carkeys: donot part with
them except underexceptional circumstanc-

es.

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Toavoid battery run-down, alwaysremove the
ignition keyfrom theignition lock.
Replacement
keys

Replacement carkeys canbeobtained onlyfrom
your authorized Porschedealer,andthis can
sometimes bevery time-consuming.
You should therefore alwayskeepthespare key
on your person.
Keep itin asafe place (e.g.wallet), butunder no
circumstances inor on the vehicle.
The keycodes ofnew keys have tobe "reported"
to the carcontrol unitbyyour authorized Porsche
dealer.
The keygrip ofthe spare keycan beexchanged
for amain-key grip.

Disabling keycodes

If a key islost, thekey codes canbedisabled by
an authorized Porschedealer.
All the remaining carkeys arerequired forthis pur-
pose.
Disabling thecode ensures thatthecar can be

started
onlyusing authorized keys.

Note

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Please notethattheother lockscanstillbe
opened withthedisabled key.
Immobilizer

There isatransponder (anelectronic component)
in the key grip, containing astored code.
When theignition isswitched on,the ignition lock
checks thecode.
The immobilizer canbedeactivated andtheen-
gine started onlyusing anauthorized ignitionkey.

Note

If the ignition isleft onfor more thantwominutes
without starting theengine, theimmobilizer isre-
activated.

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Ifthis happens, theignition keymust beturned
back tothe "0"position beforetheengine can
be started.
The immobilizer isautomatically activatedwhen
the ignition keyiswithdrawn.
Security WheelBolts

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Ifwheels havetobe removed duringawork-
shop visit,donot forget tohand overthesock-
et for the security wheelboltsalong withthe
car key.
Controls,Instruments
19

AirbagSystems

The Airbags incombination withthesafety belts
makes upasafety system whichoffers thedriver
and thepassenger thegreatest knownprotection
from injuries incase ofaccident.
Even ifyour vehicle isequipped withairbags,
the
safety beltsmust beworn atall times,
be-

cause thefront airbag system isonly actuated by
frontal collisions withanimpact ofsufficient sever-
ity.
See shown figureforranges ofeffectiveness.
Controls, Instruments Below
theactuation threshold ofthe airbag sys-
tem, andduring typesofcollisions whichdonot
cause theactuation ofthe system, thesafety belts
provide theprimary protection tothe occupants
when correctly worn.

Therefore, allpersons withinthevehicle
must always wearsafety belts
(inmany states,
state lawrequires theuse ofsafety belts).

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Please observe thechapter "SAFETY BELTS"
on Page 32.
The front airbags arelocated behindthepadded
steering wheelpanelonthe driver's sideandon
the passenger's sideinthe dashboard.
The side airbags (POSIP-Porsche SideImpact
Protection System)areinstalled inthe doors un-
der the door trimpanel.

Function

The front airbags aretriggered duringafrontal
collision ofsufficient force.
In the event ofaside impact ofcorresponding
force, theside airbag onthe impact sideistrig-
gered.
The inflation process generates theamount ofgas
required tofill the airbags atthe necessary pres-
sure infractions ofasecond.
Airbags protecttheface andupper body,whilst
simultaneously dampingthemotion ofthe driver
and passenger inthe impact direction inthe event
of afrontal impact orside impact.
A

Danger!
To provide optimal occupant protection, air-
bags must inflate atvery highspeed.
If you arenotwearing yoursafety beltorare
too close tothe airbag whenitsdeployed, in-
flating airbags canresult inserious injuryor
death.

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Make surethere arenopeople, animals orob-
jects between thedriver orpassenger andthe
area intowhich theairbag inflates.

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Sitback asfar from thedashboard orsteering
wheel asispractical, whilestillmaintaining full
vehicle control.

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Donot lean against theinside ofthe doors.

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Always holdthesteering wheelbythe outer
rim. Never restyour hands onthe airbag panel.

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Never transport heavyobjects onorinfront of
the passenger seat.

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Always keepthelidofthe door storage com-
partment closed.Objects mustnotprotrude
out ofthe door storage compartment.

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Give your passenger allofthe information in
this chapter.

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Nochanges mustbemade tothe wiring or
components ofthe airbag system.

Stopping Engine

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Turn keyback toposition
O.

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Donot stop engine immediately afterhardor
extended driving.
Keep engine running atincreased idlefor
about twominutes toprevent excessive heat
build-up beforeturning offengine.

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Toavoid battery run-down, alwaysremove the
ignition keyfrom theignition lock.

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Make surethatwhen youleave thecar, even
briefly, youhave withdrawn theignition key.

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Engage thesteering lockbymoving thesteer-
ing wheel tothe leftorright.
Turn thesteering wheeltothe locking position
before youswitch offthe engine sothat you
don't havetoexert yourself whenlocking or
unlocking thesteering.

A
Warning!
Hot engine compartment componentscan
burn skinoncontact.

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Before working onany part inthe engine com-
partment, turntheengine offand letitcool
down sufficiently.
Engine-compartment
blower,
radiator fan

The radiator andradiator fansareinthe front of
the car.
The engine-compartment blowerismounted on
the engine compartment lid.

A
Warning!
Risk ofinjury.
After theengine isswitched off,theengine-
compartment andcoolant temperatures are
monitored forapprox. 20minutes.
During thisperiod, anddepending ontem-
perature, theengine-compartment blower
and radiator fansmaycontinue torun or
start torun.

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Carry outwork inthese areasonlywith theen-
gine off,theignition off,and exercise extreme
caution.
Automatic
garagedoor

The ignition systeminyour Porsche mayinterfere
with your electronically operatedgaragedoor.

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Tocheck this,drive yourPorsche closetothe
garage door.Make surenottointerfere with
the operating rangeofthe door.

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Run theengine atdifferent speeds.
If the garage dooropens orcloses without youop-
erating thegarage doorunitinyour car,contact
the dealer whoinstalled theautomatic garage
door tohave thefrequency and/orcodingofthe
garage doorsignal changed ormodified.
Controls, Instruments

A
Warning!
Risk ofan accident, personalinjuryandloss
of control.

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Donot reach through thesteering-wheel
spokes whiledriving.

Switching betweenunits

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With theignition on,hold adjustment buttonA
turned tothe leftforapprox. 5seconds.
Note
The units ofthe distance andspeed displays can
also bechanged inthe "SET" menuofthe on-
board computer.

A -
Adjustment button
for
change-over between
kilometers/miles
Speedometer

The digital speedometer isintegrated inthe point-
er instrument.
The indication changesfrommphtokm/h when
the units arechanged frommiles tokilometers.
Controls, Instruments
Changing
overbetween
Miles /Kilometers

You canuseadjustment buttonAto change the
units ofthe distance andspeed displays inthe on-
board computer anddigital tachometer.

A-
Adjustment buttonforclock

B -
Clock

Clock

The
clock
isblanked outapproximately fourmin-
utes after theignition isswitched offorwhen the
car islocked.
Controls, Instruments
Setting
thetime

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Warning!
Risk ofan accident andlossofcontrol.

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Donot reach through thesteering-wheel
spokes whiledriving.

Setting hours

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Press adjustment buttonAfor about onesec-
ond. Hour display flashes.

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Turn button inthe appropriate direction:
to right -increase hoursfigure
to left -decrease hoursfigure.
Adjustment inhours -turn button briefly
Fast adjustment (displaycycles)-
turn andhold button.

Setting minutes

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Press adjustment buttonagain.
Minutes displayflashes.

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Set byrotating asinhours mode.
Leaving
adjustment mode

Automatically afteroneminute
or:

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Press adjustment buttonagain.
When adjustment modeisdeliberately leftby
pressing thebutton, thetime begins precisely to
the second.

Note

The time mode canbechanged between12hand
24h inthe on-board computer.

TurnSignal /
Headlight Dimmer/Flasher Lever

Turn signals, lowbeam andhigh beam areready
for operation whentheignition ison.

1 -
Turn
signal left
2 -
Turn signal right

3 -
High beam

4 -
Headlight flasher
Lever incenter position -
Low beam When
highbeam andheadlight flasherareselect-
ed, the blue indicator lightinthe tachometer islit.
The turn signal leverturns offautomatically when
the steering wheelisstraightened outafter com-
pleting aturn.

Lane changer

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Toindicate yourintention whenchanging lanes
on the freeway, slightlyliftordepress thelever
to the resistance point.
The lever willreturn tothe OFF position when
released.

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Ifthe frequency ofthe display becomes notice-
able faster, checktheoperation ofthe turn sig-
nal bulbs.

Headlight flasher

(With ignition onoroff)

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Toflash theheadlights tooncomming motor-
ists, slightly pullthelever toward thesteering
wheel andthen release it.
The blue indicator lightinthe tachometer will
go on/off asyou pull/release thelever.
Controls,Instruments

CarTelephone and
Aftermarket Alarms

Important legalandsafety information
regarding theuse ofcellular telephones

Some states mayprohibit theuse ofcellular tele-
phones whiledriving avehicle. Checkthelaws and
regulations onthe use ofcellular telephones inthe
areas where youdrive.

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Danger!
Risk ofan accident.
Severe personal injuryordeath canresult in
the event ofan accident.
Looking awayfromtheroad orturning your
attention awayfromyourdriving cancause
an accident andserious orfatal injury.

When usingyourcellular telephone, youshould al-
ways:
" Give fullattention toyour driving -pull offtile
road andpark before making oranswering a
call iftraffic conditions sorequire;
and

" Keep bothhands onthe steering wheel-use
hands-free operation(ifavailable) -pull offthe
road andpark before usingahand-held tele-
phone.
It
is essential toobserve theinstructions of
the telephone manufacturer beforeputting
the telephone intooperation.

Any portable telephone orradio transmitter which
is used inaPorsche mustbeproperly installedin
accordance withthetechnical requirements of
Porsche.

The transmission powermustnotexceed

lOW.

The devices mustpossess atype approval for
your vehicle andhave an"e"
symbol.

If you should require equipment withtransmission
power values greater than10 W, please consult
your authorized Porschedealerforthis purpose.
He isfamiliar withthetechnical requirements for
installing devicesofthis kind.
The antennas forallradios andtelephones witha
transmitting antennamustbeexternally mounted.
The improper installation ofradios ortelephones
or use ofaradio ortelephone withatransmitting
antenna insidethecar may cause
thewarning
lights tocome on.

Improper installation ofsuch equipment cancre-
ate adischarged batteryorexcessive current
draw fromadded equipment. If
aftermarket systemsareinstalled bynon-dealer-
ship technicians oroutside theselling dealer,
problems mayresult. Installation ofaftermarket
equipment isnot covered undertheNew CarWar-
ranty.
" Consult yourauthorized Porschedealerabout
the installation ofnon Porsche approved equip-
ment.

Reception quality

The reception qualityofyour cartelephone will
change constantly whenyouaredriving. Interfer-
ence caused bybuildings, landscape andweather
is unavoidable. Itmay become particularly difficult
to hear when usingthehands-free functiondueto
external noisesuchasengine andwind noise.

Automatic car-wash

" Unscrew externalantennas beforeusinganau-
tomatic car-wash.
Controls, Instruments
107

FuelEconomy

Fuel economy willvary depending onwhere,
when andhow youdrive, optional equipment
installed, andthegeneral condition ofyour
car.
A car tuned tospecifications andcorrectly
maintained, willhelp youtoachieve optimal
fuel economy.

~ Have yourvehicle tunedtospecifications.
Air cleaner shouldbedirt free toallow proper
engine "breathing".
Battery shouldbefully charged.
Wheels shouldbeproperly aligned.
Tires should beinflated atcorrect pressure.
~ Always monitor yourfuelconsumption.
~ Drive smoothly, avoidabrupt changes inspeed
as much aspossible.
~ Avoid jackrabbit startsandsudden stops.
~ Donot drive longer thannecessary inthe lower
gears. Shifting intoahigher gearearly without
lugging theengine willhelp save fuel.
~ Prolonged "warmup"idling wastes gas.Start
the vehicle justbefore youareready todrive.
Accelerate slowlyandsmoothly.
~ Switch offthe engine ifstationary forlonger
periods.
Maintenance, CarCare ~
Any additional weightcarried inthe vehicle re-
duces fueleconomy. Alwayskeepcargo toa
minimum andremove allunnecessary items.
~ Organize yourtripstotake inseveral errands
in one trip.
~ Allelectrical accessories contributetoin-
creased fuelconsumption.
~ Only switch onthe airconditioning whenneces-
sary.
~ Donot drive withtheRoof Transport System
mounted unlessyouneed it.

The EPA estimated m.p.g.isto be used for
comparison purposes,actualmileage may
be different fromtheestimated m.p.g.,
depending onyour driving speed,weather
conditions andtriplength. Youractual
highway mileagewillprobably beless than
the estimated m.p.g.

~ Please observe alllocal andnational speed
limits.
Operating
YourPorsche inother
Countries

Government regulationsinthe United States and
Canada requirethatautomobiles meetspecific
emission regulations andsafety standards. There-
fore, carsbuiltforthe U.S. andCanada differfrom
vehicles soldinother countries.
If you plan totake your Porsche outsidetheconti-
nentallimits ofthe United States orCanada, there
is the possibility that
- unleaded fuelmay notbeavailable;
- unleaded fuelmay have aconsiderably lower
octane rating.Excessive engineknockandse-
rious damage toboth engine andcatalytic con-
verters couldresult;
- service maybeinadequate duetolack ofprop-
er service facilities, toolsordiagnostic equip-
ment;
- replacement partsmaynotbeavailable orvery
difficult toget.

Porsche cannotberesponsible forthe
mechanical damagethatcould result
because ofinadequate fuel,service orparts
availability.

If you purchased yourPorsche abroadandwant to
bring itback home, besure tofind outabout ship-
ping andforwarding requirements, aswell ascur-
rent import andcustoms regulations.

Tiredamage, puncture

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Check tiresforimbedded material,cuts,punc-
tures, cracks andbulges (sidewall)before
driving off.
In case oftire damage, whereitis uncertain
whether thereisabreak inthe plywith allits con-
sequences ortire damage causedbythermal or
mechanical overloading duetoloss ofpressure or
any other priordamage, werecommend thatthe
tire bereplaced forsafety reasons.
If one faulty tireisreplaced itshould benoted that
the difference intread depth onone axle must not
exceed 30
%.

Handling inconsistencies mayresult.

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Perform avisual inspection ifnecessary.
Tire replacements
If in doubt, contact yourPorsche dealeror
Porsche Importer ofyour country.
Use only tiremakes andtypes tested byPorsche.

If you donot use aPorsche recommended
replacement tire,make surethatyou
purchase yournewtires from areputable
tire dealer andthat thedealer complies with
all manufacturers warningsforthose tires.
Only tires withthesame make andwith the
same specification code(e.g."NO", "Nl"... )
can bemounted. Before
mounting newtires, check withyour
Porsche dealeraboutthecurrent release
status.
Use tires with"ZR" quality standards.
There
are currently nostandards concerning tire
strength atspeeds above150mph (240 kmjh).
Tires should bereplaced noless than onone axle
at the time.
Only tires ofthe same makeandtype must be
used. Mixed tiresarenotpermissible.
Initially, newtires donot have theirfulltraction.
You should therefore driveatmoderate speeds
during thefirst 60-120 miles (100-200 km).
If new tires areinstalled onlyonone axle, anotice-
able change inhandling occursduetothe different
tread depth ofthe other tires.
This happens especially ifonly reartires arere-
placed. However, thiscondition disappears asthe
new tires arebroken in.

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Please adjustyourdriving styleaccordingly.
Installation ofnew tires should onlybedone bya
qualified tiretechnician.
Valves

Rubber valvestems mustbereplaced everytime
a tire isreplaced.
For metal valves, theinstallation andreplacement
instructions mustbeobserved.
Use only genuine Porsche metalvalves.
Parking atthe curb

/!\
Warning!
Hard impacts againstcurbs(ortraffic
islands) aredangerous andmay cause hid-
den tiredamage whichisnot noticeable until
later. Suchdamage canresult inaccidents
at high speeds causing severepersonal inju-

ry.

Depending onthe force ofimpact, theedge
of the rim can also bedamaged.

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Ifyou areindoubt, havethewheel checked by
an expert, particularly ifyou suspect damage
on the inside.

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Ifyou must driveoveracurb orother obstacle,
drive slowly andatan obtuse angle.Exercise
care when parking alongcurbs.
Practical Tips,Emergency Service