Approval of tire and wheel sizes is granted based on extensive testing. Your authorized Porsche dealer will be pleased to advise you about the current approval status.
By fitting tires that have been approved by Porsche, you can be sure that you have the best possible tires for your Porsche.
The load capacity coefficient (e.g. "109") and code letter (e.g. "V") for permitted top speed are minimum requirements.
When fitting new tires or changing tires: Please see the chapter "TIRES AND WHEELS" on page 265.
Snow chain clearance can only be guaranteed for the tires marked1). Can only be fitted on the rear wheels when 19/20-inch tires are used. In the case of 18-inch tires, chains can also be fitted on the front axle if chains are fitted on all four positions. Maximum speed: 30 mph (50 km/h). Use only fine-link cross-type or edge chains approved by Porsche. Observe the respective road traffic regulations.
Improper Tire Size
Installation of sizes not authorized by Porsche may impair driving stability and could result in loss of control of the vehicle.
Before mounting new tires check with your authorized Porsche dealer for a current list of approved tires.