Porsche CARRERA GT-2004 Manual page 182

Tires, Rims, Tracks
Tire
Tires front 265/35 ZR 19 (89)
rear 335/30 ZR 20 (109)
The load capacity coefficient (e.g. "89") is a minimum requirement.
Warning!
Installation of sizes not authorized by
Porsche may have a dangerous effect on
the driving stability and could result in
severe personal injury or death.
f Before mounting new tires, check with your
Porsche dealer about the current release
status.
Tire and rim sizes Extensive tests are performed before specific tires and wheels are approved by Porsche. Your Porsche dealer has infor-
mation about approved tires and wheels and is happy to assist you.
If aftermarket tires and/or wheels are installed which are not approved by Porsche, the vehicle's roadability and handling
characteristics might be impaired. Since Porsche has no data on such combinations, Porsche cannot stand behind the
safety or durability of these aftermarket combinations.
Snow chains Can be mounted only on the rear wheels; maximum speed 30 mph/50 km/h.
Use only Porsche authorized fine-link cross-type or edge chains.
182
Technical Data
Rim Rim offset
9.5 J x 19 6 mm
12.5 J x 20 39 mm
Track
63.46 in./1612 mm
62.48 in./1587 mm