2009 Audi S8 Wheel Backspacing
6.27 in · 6.40 in · 6.50 in
Quick specs
- Backspacing
- 6.27 in · 6.40 in · 6.50 in
- OEM offset
- ET45 · ET42 · ET38
- Wheel size
- 9x20 · 9.5x21 · 10x21
- Bolt pattern
- 5×112
- Tire size
- 265/35R20 · 275/35R20 · 275/30R21 · 285/30R21
OEM configurations
| Configuration | Rim | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|
| 5.2FSI · 5.2L, BSM, V10, Petrol | 9x20 | ET45 | 6.27 in | 265/35R20 | 5x112 | 57.1 mm | M14 x 1.5 |
| 5.2FSI · 5.2L, BSM, V10, Petrol | 9x20 | ET45 | 6.27 in | 275/35R20 | 5x112 | 57.1 mm | M14 x 1.5 |
| 5.2FSI · 5.2L, BSM, V10, Petrol | 9.5x21 | ET42 | 6.40 in | 275/30R21 | 5x112 | 57.1 mm | M14 x 1.5 |
| 5.2FSI · 5.2L, BSM, V10, Petrol | 10x21 | ET38 | 6.50 in | 285/30R21 | 5x112 | 57.1 mm | M14 x 1.5 |
Compare wheel position See wheel offset
Backspacing values above are calculated from OEM wheel width and offset using BS = width/2 + offset_mm/25.4 (same formula as the fitment calculator).
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More specs for the 2009 Audi S8
Backspacing on these pages is calculated from OEM wheel width and offset (width/2 + offset_mm/25.4). Higher backspacing seats the wheel farther inward; lower backspacing moves it outward.