Wheels/Tires - Approved Summer Tires/Wheels: Overview
96808/08 ENU 4440
Manufacturer's Certificate
Summer Tires, Wheel and Spacers
NOTE:
This Manufacturer Approval document replaces Technical Information No. 9/03 dated January 23, 2004.
Vehicle Type:
968
Model Year:
As of 1992 up to 1995
Information:
Newly approved summer tires
WARNING:
Driving with different tires (mixed tires)
- Uncontrollable vehicle handling
--> 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:
NOTE:
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.
If a tire is damaged and it is not possible to determine with absolute certainly 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 permissable, as well as the use of inner tubes in tubeless tire. 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 the 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 tire 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:
NOTE:
The tire pressure applies only to the tire makes and types approved by Porsche, and is specified for cold tire (approx. 68 degrees F/20 degrees C. The tire pressure must never be lower than the specified values.
Sizes
NOTE:
Improper handling can damage the wheel surface.
Carry out tire removal and mounting using a bead holding-down device only.
Use a leather pad on the rim flange to support the valve insertion tool.
Only use the Porsche centering clamping set for balancing.
Do not use brushes to clean the wheels because brushes can cause deep scratches that cannot be removed by polishing.
Never use solvents or other chemical substances on tires.