Porsche 911 Turbo Owner's Manual page 293

Tires, Rims, Tracks
Tire
Summer tires front 235/35 ZR 19 (87Y)
rear 305/30 ZR 19 (102Y) XL
Snow tires front 235/40 R 18 91V M+S
rear 295/35 R 18 99V M+S*
or front 235/35 R 19 87V M+S
rear 295/30 R 19 100V XL M+S*
The load capacity coefficient (e.g. "91") and maximum speed code letter (e.g. "Y") are minimum requirements.
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.
Snow chain clearance can be guaranteed only on the tire + rim combination marked*.
Tire and rim sizes Extensive tests are performed before specific tires and wheels are approved by Porsche. Your Porsche dealer has informa-
tion 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 driveability, stability while
in motion 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.
Danger!
Installation of sizes not authorized by
Porsche may have a dangerous effect on
the driving stability and could result in
serious personal injury or death.
f Before mounting new tires, check with your
Porsche dealer about the current release status.
Rim Rim offset
8.5 J x 19 H2 56 mm
11 J x 19 H2 51 mm
8 J x 18 H2 57 mm
11 J x 18 H2 51 mm
8.5 J x 19 H2 56 mm
11 J x 19 H2 51 mm
Track
58.66 in./1490 mm
60.94 in./1548 mm
58.58 in./1488 mm
60.94 in./1548 mm
58.66 in./1490 mm
60.94 in./1548 mm
291
Technical Data