2008 GMC Sierra 2500HD Wheel Backspacing
4.94 in · 5.04 in · 5.29 in
Quick specs
- Backspacing
- 4.94 in · 5.04 in · 5.29 in
- OEM offset
- ET24 · ET20
- Wheel size
- 8x20 · 8.5x20 · 9x20
- Tire size
- 265/60R20 · 275/55R20 · 285/50R20
OEM configurations
| Configuration | Rim | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|
| 6.0i · V8, Petrol | 8x20 | ET24 | 4.94 in | 265/60R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.0i · V8, Petrol | 8.5x20 | ET20 | 5.04 in | 275/55R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.0i · V8, Petrol | 9x20 | ET20 | 5.29 in | 285/50R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 8x20 | ET24 | 4.94 in | 265/60R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 8.5x20 | ET20 | 5.04 in | 275/55R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 9x20 | ET20 | 5.29 in | 285/50R20 | 8x165.1 | 116.7 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 2008 GMC Sierra 2500HD
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.