2011 Porsche Boxster Wheel Offset
ET55 · ET57 · ET50
Quick specs
- OEM offset
- ET55 · ET57 · ET50
- Wheel size
- 7x17 · 8x18 · 8x19 · 8.5x19 · 8.5x20
- Backspacing
- 5.67 in · 6.24 in · 6.42 in · 6.22 in
- Bolt pattern
- 5×130
- Tire size
- 205/55R17 · 235/40R18 · 235/35R19 · 235/30R20
OEM configurations
| Configuration | Front | Rear | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|---|
| 2.9 · 2.9L, MA 120, F6, Petrol | 7x17 | 7x17 | ET55 | 5.67 in | 205/55R17 | 5x130 | 71.6 mm | M14 x 1.5 |
| 2.9 · 2.9L, MA 120, F6, Petrol | 8x18 | 7x17 | ET57 / ET55 | 6.24 in | 235/40R18 / 205/55R17 | 5x130 | 71.6 mm | M14 x 1.5 |
| 2.9 · 2.9L, MA 120, F6, Petrol | 8x19 | 7x17 | ET57 / ET55 | 6.24 in | 235/35R19 / 205/55R17 | 5x130 | 71.6 mm | M14 x 1.5 |
| 2.9 · 2.9L, MA 120, F6, Petrol | 8.5x19 | 7x17 | ET55 | 6.42 in | 235/35R19 / 205/55R17 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 S · 3.4L, MA 121, F6, Petrol | 8x18 | 8x18 | ET57 | 6.24 in | 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 S · 3.4L, MA 121, F6, Petrol | 8x19 | 8x18 | ET57 | 6.24 in | 235/35R19 / 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 S · 3.4L, MA 121, F6, Petrol | 8.5x19 | 8x18 | ET55 / ET57 | 6.42 in | 235/35R19 / 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 S · 3.4L, MA 121, F6, Petrol | 8.5x20 | 8x18 | ET50 / ET57 | 6.22 in | 235/30R20 / 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 Spyder · 3.4L, MA 121C, F6, Petrol | 8x18 | 8x18 | ET57 | 6.24 in | 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 Spyder · 3.4L, MA 121C, F6, Petrol | 8x19 | 8x18 | ET57 | 6.24 in | 235/35R19 / 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 Spyder · 3.4L, MA 121C, F6, Petrol | 8.5x19 | 8x18 | ET55 / ET57 | 6.42 in | 235/35R19 / 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
| 3.4 Spyder · 3.4L, MA 121C, F6, Petrol | 8.5x20 | 8x18 | ET50 / ET57 | 6.22 in | 235/30R20 / 235/40R18 | 5x130 | 71.6 mm | M14 x 1.5 |
See how a different wheel would sit See wheel backspacing
What happens if you change the offset?
Compare your own setup
See how a different width or offset sits versus an OEM configuration for this year.
Wheels and hardware for this vehicle
More on AmazonLug hardware
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Dorman 611-236 Wheel Lug Nut M14-1.50
M14 x 1.5
Matches M14 x 1.5 thread — confirm wheel seat style
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White Knight M14 x 1.50 Lug Nuts
M14 x 1.5
Matches M14 x 1.5 thread — confirm wheel seat style
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White Knight 3809XLBK-33AM Black M14x1.50 Lug Nuts
M14 x 1.5
Matches M14 x 1.5 thread — confirm wheel seat style
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Wheel locks
More on AmazonMore specs for the 2011 Porsche Boxster
OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.