Wheels/Tires - Summer Tires/Wheels & Spacers: Overview
911 (993)12/08 ENU 4440
Manufacturer's Certificate
Summer Tires, Wheels and Spacers
NOTE:
This Manufacturer Approval document replaces Technical Information No. 1/04 dated May 25, 2004.
Vehicle Types:
911 Carrera/911 Carrere 4/911 Carrere Targa/911 Carrere RS (993)
Model Year:
As of 1994 up to 1998
Information:
Newly approved tries
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 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.
Repair to "V", "W," "Y," and "ZR" tires are not permissable, 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.
Before model year 1996 (T) only Coupe vehicles within the following vehicle identification number ranges may be retrofitted with 18-inch wheels:
WP0 AA2 99 8SS 32 2696 up to WP0 AA2 99 8SS 32 4139 (USA and Canada)
A transverse strut, Part No. 993.347.131.02 must also be fitted between the steering gear fastening clamps, together with longer hexagon socket head bolts.
Vehicle were produced within the specified vehicle identification number ranges which were not equipped with the body structure reinforcements necessary for 18-inch wheels. These vehicles cannot be retrofitted with 18-inch wheels. The vehicle identification numbers of these vehicles are listed at the end of this Manufacturer Approval document.
WARNING:
Incorrect tire pressure
- Uncontrollable vehicle handling
--> Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minim 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:
NOTE:
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.
Sizes