184
Practical Tips, Emergency Service
Tires/Wheels The original equipment tires and wheel rims on
your Porsche comply with all applicable Federal
Motor Vehicle Safety Standards.
For your safety remember the following:
– Wheel rims and wheel bolts are matched to fit
your Porsche.
– If you intend to use other than original equip-
ment wheels, be sure that they conform to
Porsche specifications for your model.
Only tires with the same make and with the
same specification code (e.g. “N0”, “N1”...)
can be mounted.
– The use of wheel rims and wheel bolts that do
not meet specifications of the original factory
installed equipment will affect the safe opera-
tion of your vehicle.
– Before you plan on exchanging wheels, or
snow tires already mounted on the wheel rims,
consult your authorized Porsche dealer. Your
dealer has the technical information necessary
to advise you which wheel rims and wheel bolts
are compatible with the original factory instal-
lations.
Danger!
Risk of loss of control and serious personal
injury or death.
fIf while driving, your vehicle experiences a
sudden vibration or ride disturbance, and/or
you suspect that possible damage to your tires
or vehicle has occurred, you should immedia-
tely reduce your speed without excessive use
of the brakes.
fStop the vehicle as soon as possible, and
inspect the tires.
If you cannot determine the cause for the
disturbance, have your vehicle towed to the
nearest Porsche or tire dealer to have your
vehicle or tire(s) inspected.
fContinuing to operate the vehicle without
correction could result in a loss of control and serious personal injury.
ExampleUniform Tire Quality GradingQuality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width.
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades.
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188
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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238
Technical Data
Tires, Rims, Tracks
Tire Rim Rim offset Track
Summer tiresfront 235/35 ZR 19 (87Y) 8.5 J x 19 H2 53 mm 58.9 in./1497 mm
911 GT3 rear 305/30 ZR 19 (102Y) XL 12 J x 19 H2 63 mm 60.0 in./1524 mm
Snow tiresfront 235/35 R 19 87V M+S 8.5 J x 19 H2 53 mm
911 GT3 rear 295/30 R 19 100V XL M+S* 11 J x 19 H2 67 mm
The load capacity coefficient (e.g. “87”) and maximum speed code letter (e.g. “Y”) are minimum requirements.
Snow chainsCan be mounted only on the rear wheels; maximum speed 30 mph (50 km/h).
Use only Porsche authorized fine-link cross-type or edge chains.
Snow chain clearance can be guaranteed only on the tire + rim combination marked*.
Tire and rim sizesExtensive tests are performed before specific tires and wheels are approved by Porsche. Your Porsche dealer has informa-
tion about approved tires and wheels and is happy to assist you.
If aftermarket tires and/or wheels are installed which are not approved by Porsche, the vehicle’s driveability, stability while
in motion and handling characteristics might be impaired. Since Porsche has no data on such combinations, Porsche cannot
stand behind the safety or durability of these aftermarket combinations.
Danger!
Installation of sizes not authorized by
Porsche may have a dangerous effect on
the driving stability and could result in
severe personal injury or death.
fBefore mounting new tires, check with your Porsche dealer about the current release status.
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Index
247
OOctane rating ..................................... 166, 167
Odometer .................................................. 109
Off delay ...................................................... 74
Oil ............................................................. 159
Checking level .................................... 143
Choosing the right oil .......................... 160
Consumption ........................................ 13
Level checks ...................................... 160
Level indicator .................................... 143
Pressure ............................................ 115
Temperature....................................... 108
Topping off engine oil .......................... 160
OIL Display and measurement of the
engine oil level ............................................ 143
On-board computer ..................................... 117
Basic settings ............................. 118, 145
Calling on-board computer functions ..... 118
Functions and display possibilities ........ 118
General information ..................... 146, 147
Language versions .............................. 145
Operation, controls ............................. 117
Selecting a radio station ...................... 133
Setting the clock ................................. 146
Switching daytime running lights on/off. 146
Switching on navigation ....................... 133
Tire pressure warnings ........................ 139
Warnings and messages...................... 148
On-board literature .......................................... 2
Operating voice control ............................... 117
Operating your Porsche in other Countries .... 164
Orientation light ............................................ 66
Outside temperatur indicator ....................... 114
Oxygen sensor ........................................... 169
PPaint
Care...........................................174, 176
Data ...................................................235
Parking brake ...............................................53
Warning light.........................................54
Parking light ...........................................73, 75
Particle filter ...............................................172
Passenger compartment monitoring ...............26
Pen holder ....................................................84
Plastic parts ...............................................179
Care...................................................179
Platform lift.................................................206
Porsche Active Suspension Management
(PASM) .........................................................63
Sport mode ..........................................63
Switching off Sport mode ......................63
Porsche Ceramic Composite Brake (PCCB) .......6
Porsche Communication Management (PCM)...89
Porsche Stability Management (PSM) ..............59
Information light ....................................61
Power steering fluid level .....................171, 239
Power windows .............................................21
Practical tips ..............................................183
Putting vehicle into operation .......................213RRadiator fan..........................................71, 159
Radio reception ............................................89
Rain sensor ............................................76, 77
Range on remaining fuel ......................118, 147
Reading light ................................................66
Rear lid ..................................................85, 86
Rear view mirrors..........................................31Rear window defogger.......................... 32, 102
Rear window heating.................................. 102
Recirculating-air button ................................. 99
Refueling ................................................... 166
Relays ....................................................... 207
Remote control ............................................ 19
Readiness ............................................ 20
Replacing battery ............................... 216
Standby funktion .................................. 20
Synchronization.................................... 20
Replacement key.......................................... 18
Replacing bulbs.......................................... 219
Replacing wiper blades............................... 173
Rims
Diameter ........................................... 194
Rim width........................................... 194
TPM sensors...................................... 190
Running in.................................................... 13
SSafety belts ................................................. 38
Cleaning ............................................ 180
Height adjustment................................ 40
Tensioner ............................................ 38
Warning light ........................................ 39
Safety compliance sticker ........................... 234
SC OFF button ............................................. 60
SC+TC OFF button ....................................... 61
Sealing set ................................................ 204
Seals ........................................................ 179
Care .................................................. 179
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