Porsche Boxster Owner's Manual page 281

Boxster S
Summer tires front
rear
or front
rear
or
front
rear
Snow tires front
rear
The load capacity coefficient (e.g. "91") and maximum speed code letter (e.g. "Y") are minimum requirements.
f When changing tires or fitting new ones: Please see the chapter "WHEEL BOLTS" on Page 236.
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.
Tire and rim sizes
Extensive tests are performed before specific tires and wheels are approved by Porsche. Your Porsche dealer has information
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. Snow chain clearance can be guaranteed only with the tire + rim combination marked*
without spacers. Please see the chapter "SPACERS" on Page 243.
Tires Rim
235/40 ZR 18 91Y 8 J x 18 H2
265/40 ZR 18 101Y XL 9 J x 18 H2
235/35 ZR 19 87Y 8 J x 19 H2
265/35 ZR 19 94Y 9.5 J x 19 H2
235/35 ZR 19 87Y 8.5 J x 19 H2
265/35 ZR 19 94Y 10 J x 19 H2
235/40 R 18 91V M+S 8 J x 18 H2
* 255/40 R 18 95V M+S 9 J x 18 H2
Rim offset Track
57 mm 58.5 in./1486 mm
43 mm 60.2 in./1528 mm
57 mm 58.5 in./1486 mm
46 mm 59.9 in./1522 mm
55 mm 58.7 in./1490 mm
42 mm 60.2 in./1530 mm
57 mm 58.5 in./1486 mm
43 mm 60.2 in./1528 mm
Technical Data
279