2009 Porsche Boxster tire sizes
The 2009 Porsche Boxster came from the factory with 4 tire sizes on 17" to 18" wheels. The most common size is 205/55 R17. Some setups are staggered, with wider tires at the rear. Pick your trim below.
2009 Boxster Base Model
Factory (OE) sizes
17"wheels
Front205/55 R17Rear235/50 R17
2009 Boxster S
Factory (OE) sizes
18"wheels
Front235/40 R18Rear265/40 R18
Optional sizes
19"wheels
Front235/35 R19Rear265/35 R19
How to read 205/55 R17
- 205
- Tread width in millimetres
- 55
- Sidewall height, % of width
- R
- Radial construction
- 17
- Wheel diameter in inches
Overall diameter: about 25.9" · Sidewall: 113 mm