Wheels/Tires - Approved Winter Wheels/Tires/Snow Chains
Approved Winter Tires, Wheels and Snow ChainsINFORMATION
This Technical Information replaces Technical Information No. 24/08, dated August 28, 2008.
Vehicle Type:
911 Turbo (997J/911 Turbo Cabriolet (997)
Model Year:
As of 2007
Situation:
Approved winter tire makes and types - November 2008.
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:
INFORMATION
- N... = Specification code of the tire, e.g. "N0","N1", "N2"... The complete "N. 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.
Arrow with inscription "Rotation" = directional mounting.
"Inside/Outside" inscription = mounting on specified side only.
Arrow with both inscriptions "Rotation" and "Inside/Outside" = directional mounting on specified side only.
- 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 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 °F/7 °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 °F/20 °C. The tire pressures must never be lower than the specified values.
Sizes:
WARNING
Wheel electronics units not detected, incorrectly secured or loose on vehicles without Tire Pressure Monitoring (TPM)
- Risk of damage to wheels and/or tires
- Uncontrollable vehicle handling
- Do not mount wheels with wheel electronics units on vehicles without TPM.
Wheels:
0verview of Porsche wheels for winter tyres
Identification on the inside/outside of the wheel disc:
Wheel size, rim offset (RO) in mm, Part No. and Porsche logo
INFORMATION
- 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.
Wheel Mounting:
Tightening torque 130 Nm (96 ftlb.)
WARNING
Incorrectly installed snow chains
- Uncontrollable vehicle handling
- Do not exceed the maximum speed of Speed 50 km/h (30 mph).
- Observe installation instructions from the chain manufacturer.
Snow Chains:
INFORMATION Sufficient snow-chain clearance is only guaranteed by first removing any spacers that are installed.
Navigation Systems:
After a wheel or tire change, the full locating accuracy is attained only after a trip of approx. 50 km (30 miles), if possible on a highway and at a speed > 60 km/h (40 mph). Furthermore, high wheel slip factor (e.g. wheel spin) can result in temporary incorrect positioning.
Wheel Storage:
Tires must be stored in a cool, dry and dark room with adequate ventilation. Tires must never come into contact with fuel, oil, grease or chemicals.
Complete wheels can be stacked for storage; we recommend that you increase the tire pressure by approx. 0.4 bar (6 psi).
Optimum conditions for storage of the complete wheels are provided by the Original Porsche storage trolley, Part No. 000.044.000.38.
If the tires are not mounted on wheels, it is best to store them in a vertical position. We recommend that you turn tires stored in this position every two weeks in order to prevent flat spots. Tires that are stacked in a horizontal position will become severely deformed and cannot be seated properly in the rim flange when they are mounted.
INFORMATION
- Applicable only in the Federal Republic of Germany:
- If the tested high-speed suitability of the winter tyres mounted on the vehicle is less than the type-related top speed of the vehicle in question, German law requires that an adhesive label in the driver's field of vision must inform the driver of the maximum permissible speed in this case.
The relevant legal regulations must be observed in the export countries.
Disclaimer