Porsche carrera gt-2004 Manuel D’Utilisation

Practical Tips, Emergency Service

149

Wheel and tire damage, puncture

f Repair damage to the wheel surface (e.g.

scratches, stone damage) immediately so

that corrosion does not form.

f Replace damaged wheels with original wheels.
f Check tires for imbedded material, cuts, punc-

tures, cracks and bulges (side wall) before driv-

ing off.

In case of tire damage, where it is uncertain wheth-

er there is a break in the ply with all its conse-

quences or tire damage caused by thermal or me-

chanical 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.
f Perform a visual inspection if necessary.

Tire replacements

If in doubt, contact your Porsche dealer or

Porsche Importer of your country.

Use only tire makes and types tested by Porsche.

If you do not use a Porsche recommended

replacement tire, make sure that you

purchase your new tires from a reputable tire

dealer and that the dealer complies with all

manufacturers warnings for those tires.

Only tires with the same make and with the

same specification code (e.g. “N0”, “N1”...)

can be mounted.
The tires of the Carrera GT are specially

adjusted to the characteristics of the vehicle

and guarantee optimum driving behavior.

Any tires other than those approved by

Porsche can impair the driving behavior and

safety.

Before mounting new tires, check with your

Porsche dealer about the current release

status.
Use tires with “ZR” quality standards. There

are currently no standards concerning tire

strength at speeds above 150 mph (240 km/h).
Tires should be replaced no less than on one axle

at the time.

Only tires of the same make and type must be

used. Mixed tires are not permissible.
Initially, new tires do not have their full traction.

You should therefore drive at moderate speeds

during the first 60 - 120 miles (100 - 200 km).
If new tires are installed only on one axle, a notice-

able change in handling occurs due to the different

tread depth of the other tires.

This happens especially if only rear tires are re-

placed. However, this condition disappears as the

new tires are broken in.

f Please adjust your driving style accordingly.
Installation of new tires should only be done by a

qualified tire technician.

Valves
Observe the installation and replacement instruc-

tions for metal valves.

Use only genuine Porsche metal valves.
f Protect the valve inserts against soiling with

valve caps.

Soiled valve inserts can cause a gradual loss

of air.

Parking at the curb

Warning!

Hard impacts against curbs (or traffic

islands) are dangerous and may cause hid-

den tire damage which is not noticeable until

later. Such damage can result in accidents at

high speeds causing severe personal injury.

Depending on the force of impact, the edge

of the rim can also be damaged.
f If you are in doubt, have the wheel checked by

an expert, particularly if you suspect damage

on the inside.

f If you must drive over a curb or other obstacle,

drive slowly and at an obtuse angle. Exercise

care when parking along curbs.