--> Only use tires of the same make and type, with the same speed index and the same specification code (N0, N1, N2, ... ) on a vehicle.
Makes/Types:
Information
N... = Specification code of the tire, e.g. "N0", "N1", "N2" ... The complete "N ..." code of the tires in question must be shown on the tire sidewall
near the tire type designation.
Instructions for correct mounting of the tires are also given on the tire sidewall. If there are no mounting instructions on the tire sidewall, the tire
must be mounted so that the DOT marking is visible from the outside.
Information
If a tire is damaged and it is not possible to determine with absolute certainty that there is no ply damage - with all of its consequences - or if the tire
was thermally and/or mechanically overloaded due to a loss of pressure or other prior damage, replace the tire in question for safety reasons.
Repairs to "V", "W", "Y" and "ZR" tires are not permissible, as well as the use of inner tubes in tubeless tires. Please inform your customers
accordingly. It is advisable to mount winter tires at temperatures below 45 degrees F / 7 degrees C, because the driving characteristics of summer
tires are reduced at low temperatures. Extremely low temperatures can cause permanent damage to summer tires.
WARNING:
Incorrect tire pressure
- Uncontrollable vehicle handling
--> Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minimum pressure.
--> Check age of tires. Replace tires that are more than 6 years old.
--> Perform visual inspections.
--> Use new rubber valves at every tire change.
--> Use only tires recommended by Porsche.
Tire Pressure:
Information
The tire pressure applies only to the tire makes and types approved by Porsche, and is specified for cold tires (approx, 68 degrees F / 20 degrees C.
The tire pressures must never be lower than the specified values.