wheel alignment PORSCHE 911 GT3 2010 5.G Owners Manual

Practical Tips, Emergency Service
187
B Vehicle load limit
Is the maximum total weight limit specified of
the load (passengers and cargo) for the
vehicle. This is the maximum weight of passen-
gers and cargo that can be loaded into the
vehicle.
Please see the chapter “LOADING INFORMA-
TION” on Page 195.
C Tire size for the front axle
Check with your authorized Porsche dealer
about the current release status.
D Recommended tire pressure for the front axle
These values are for cold tires (68 °F/20 °C).
E Tire size for the rear axle
Check with your authorized Porsche dealer
about the current release status.
F Recommended tire pressure for the rear axle.
These values are for cold tires (68 °F/20 °C).
G In vehicles with collapsible spare wheel:
Size and tire pressure of the spare wheel.
Tire traction
Warning!
When driving on wet or slushy roads, a
wedge of water may build up between the
tires and the road. This phenomenon is
known as “hydroplane” and may cause
partial or complete loss of traction, vehicle
control or stopping ability.
fReduce speed on wet surface to prevent this. Tire life Tire life depends on various factors, i. e., road
surfaces, traffic and weather conditions, driving
habits, type of tires and tire care.
fInspect your tires for wear and damage before
driving off. If you notice uneven or substantial
wear, wheels might need alignment or tires
should be balanced or replaced.
Tire wear The original equipment tires on your Porsche have
built-in tire wear indicators. They are molded into
the bottom of the tread grooves and will appear as
approximately 1/2 in. (12 mm) bands when the
tire tread depth is down to 1/16 of an in.
(1.6 mm).
When the indicators appear in two or more
adjacent grooves, it is time to replace the tires.
We recommend, however, that you do not let the
tires wear down to this extent.
Worn tires cannot grip the road surface properly
and are even less effective on wet roads.
In the United States, state laws may govern the
minimum tread depth permissible. Follow all such
laws.
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Practical Tips, Emergency Service
Danger!
Driving on worn tires can result in loss of
control of the vehicle and could cause
serious personal injuries or death.
fDo not drive with worn tires or tires showing
cuts or bruises as they may lead to sudden
deflation and loss of control which could cause
severe personal injury.
fSpecialized high performance tires on high
performance sports cars exhibit more wear
than those on a family sedan, or even a high
performance sedan.
Therefore, it is important to check your tire
pressure and condition at least every two weeks.
If you notice that tires are wearing unevenly,
consult your Porsche dealer.
Uneven wear may not always be due to improper
wheel alignment. It can be the result of individual
driving habits such as cornering at high speeds. If
the tire pressure is not checked and adjusted
regularly, abnormal tire wear can also occur.
Tire care fAvoid damaging tires and wheel rims.
fI f y o u m u s t d r i v e o v e r a c u r b o r o t h e r o b s t a c l e ,
drive slowly and at an obtuse angle.
fCheck tires for uneven wear and damage
before driving off.
fRemove imbedded material.
fReplace worn or damaged tires immediately.
fKeep oil, fuel, brake fluid, etc. away from tires.
fReplace missing valve stem caps.
fKeep tires inflated correctly.
fWash tires when washing the vehicle. Also
clean inner side of wheels.
fDo not use abrasive cleaners when washing
the wheels.
fCheck wheel rims for corrosion.
fRemove road salt, if driving in winter.
Tire damage, puncture High-pressure cleaning units or steam cleaners
can damage the tires.
fPlease see the chapter “HIGH-PRESSURE
CLEANING EQUIPMENT, STEAM CLEANERS”
on Page 174.
fCheck tires for imbedded material, cuts,
punctures, cracks and bulges (side wall)
before driving off.
In case of tire damage, where it is uncertain
whether there is a break in the ply with all its
consequences or tire damage caused by thermal
or mechanical overloading due to loss of pressure
or any other prior damage, we recommend that
the tire be replaced for safety reasons.
If one faulty tire is replaced it should be noted that
the difference in tread depth on one axle must not
exceed 30%.
Handling inconsistencies may result.
fPerform a visual inspection if necessary.
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Practical Tips, Emergency Service
Parking at the curb
Warning!
Hard impacts against curbs (or traffic
islands) are dangerous and may cause
hidden tire damage which is not noticeable
until later. Such damage can result in
accidents at high speeds causing serious
personal injury or death.
Depending on the force of impact, the edge
of the rim can also be damaged.
fIf you are in doubt, have the wheel checked by
an expert, particularly if you suspect damage
on the inside.
fIf you must drive over a curb or other obstacle,
drive slowly and at an obtuse angle. Exercise care when parking along curbs.
Wheel alignment, wheel balancing As a precaution, have wheels with summer tires
balanced in the spring, and those with mud and
snow tires before winter.
Unbalanced wheels may affect car handling and
tire life.
Only the specified weights may be used for wheel
balancing.
Self-adhesive weights must not come into contact
with cleaning agents, since they could drop off.
Uneven tread wear indicates wheel imbalance. In
this event, the vehicle should be checked at an
authorized Porsche dealer.
Warning!
If, during a trip, uneven running or vibrations
occur that could be caused by damage to
tires or the car, the speed must be reduced
immediately, but without braking sharply.
If you continue your trip without having the
cause of the fault remedied, you might lose
control of your vehicle which could cause
serious personal injury or death.
fStop the vehicle and check the tires.
fIf no cause for the fault can be found, drive
carefully to the nearest authorized Porsche dealer.
Wheels with Tire Pressure Monitoring
(TPM) sensorsBefore changing wheels, make sure that the
wheels are compatible with your vehicle's TPM.
fCheck this with your authorized Porsche
dealer.
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Index
249
Towing lug ................................................... 87
TPM Tire pressure monitoring ...................... 134
Tracks ....................................................... 238
Traction Control (TC)..................................... 61
Transmission .............................................. 237
Drive-Off Assistant............................... 155
Fluid........................................... 172, 239
Manual transmission............................ 155
Porsche Doppelkupplung (PDK) ............ 155
Trip Odometer ............................................ 109
Trunk entrapment ......................................... 88
Turn signal
Indicator light...................................... 111
Turn signals ......................................... 75, 111
Turn signals, front....................................... 227UUndercoating...................................... 168, 178
Upshift indicator ................................. 111, 155
USB interface ............................................... 93
VValves ........................................................189
Vanity mirror.................................................37
Vehicle
Care...................................................174
Engine number....................................235
Identification .......................................234
Identification label ...............................234
Identification number ...........................234
Lifting.................................................206
Load capacity .....................................196
Putting into operation ..........................213
Safety compliance sticker ....................234
Washing .............................................175
Vehicle identification number ........................234
Ventilation ....................................................98
Vents ...................................................98, 101
Viscosity, engine oil.....................................160
Voice control, button ...................................117
Voice control, PCM .....................................117
WWarning lights and messages ...................... 148
Washer
Fluid .......................................... 170, 239
Fluid warning light............................... 170
Lever................................................... 76
Washing .................................................... 175
Weights ..................................................... 240
Welcome Home Function .............................. 74
Wheel .......................................... 13, 184, 238
Alignment .......................................... 190
Balancing........................................... 190
Care .................................................. 184
Central bolts ...................................... 197
Changing ................................... 198, 203
Checking pressure............................. 203
Inscription .......................................... 193
Loading information ............................ 195
Security wheel bolts ............................. 87
Sidewall ............................................. 193
Size .................................................. 193
Tire pressure ............................. 185, 237
Tire pressure plate ............................. 235
Tire sealant ................................ 203, 204
Wheels
Care .................................................. 178
Central bolts ...................................... 197
Tightening torque ............................... 197
TPM sensors...................................... 190
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