Wheels and Tires: Description and Operation

Tire condition / tire pressure
Tires are a safety element which fulfill the demands placed on them only if they have the correct air pressure and a sufficient tread depth.
The stated air pressures are minimum pressures and must never be fallen below, since in addition to the unfavorable driving performance, this would bring about a risk of serious tire damage.
Valve caps protect the valve from dust and dirt and therefore from leaks. Always screw caps tight and replace any missing caps.
For reasons of safety, besides a check on air pressure a visual check should be made for sufficient tread depth, foreign bodies, punctures, cuts, cracks and bulges in the sidewall (ply breakage).







Cold tire pressures (at approximately 20°C)

Spare wheel / collapsable wheel
No spare wheel / collapsable wheel available. However there is a tire repair kit in the luggage compartkment which can be used to repair the damaged tire in the event of damage.
For procedure in the event of damage (repair), see Tire failure/tire sealant 911 GT3.

Overview of tires and wheels
The chart of tires and wheels for summer and winter should be taken from Technical Information (TI). When replacing summer tires, pay close attention to the tire specification number. The specification characters N1, N2, N3 or N0 distinguish the summer tires specially authorized by Porsche from other models of the same tire type and size.

Notes on mounting tires
When fitting tires, the direction of rotation and the inner and outer sides should be noted.

Mounting wheel on vehicle
The wheel bolt consists of two parts that are permanently joined together. Other wheel bolts must not be used.





Note: There are 5 mm spacer washers (identical parts) fitted to the front and rear axles on the 911 GT3. The wheel bolts are 5 mm longer because of the spacer washers. The longer wheel bolts are marked with GT or with a red color (arrow) on the face surface of the bolt head. The color of the spherical cap is also red from now on.