2017 Subaru WRX STI Wheel Backspacing
6.42 in · 6.39 in · 6.02 in · 5.77 in · 7.09 in · 6.31 in · 5.94 in
Quick specs
- Backspacing
- 6.42 in · 6.39 in · 6.02 in · 5.77 in · 7.09 in · 6.31 in · 5.94 in
- OEM offset
- ET55 · ET48 · ET45 · ET53 · ET65 · ET43
- Wheel size
- 8.5x18 · 8.5x19 · 9x20 · 8x18 · 10x21 · 7.5x20
- Bolt pattern
- 5×114.3
- Tire size
- Multiple — see configurations
OEM configurations
| Configuration | Front | Rear | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|---|
| 2.5T · EJ25, H4, Petrol | 8.5x18 | — | ET55 | 6.42 in | 245/40R18 | 5x114.3 | 56.1 mm | M12 x 1.25 |
| 2.5T · EJ25, H4, Petrol | 8.5x19 | 11x20 | ET55 | 6.42 in | 255/35R19 | 5x114.3 | 56.1 mm | M12 x 1.25 |
| 2.5T · EJ25, H4, Petrol | 9x20 | 11x20 | ET48 / ET55 | 6.39 in | 255/30R20 | 5x114.3 | 56.1 mm | M12 x 1.25 |
| 2.5T · 2.5L, EJ257, H4, Petrol | 8.5x18 | 8.5x19 | ET55 | 6.42 in | 245/40R18 / 245/35R19 | 5x114.3 | 56.1 mm | M12 x 1.25 |
| 2.5T · 2.5L, EJ257, H4, Petrol | 9x20 | 8.5x19 | ET48 / ET55 | 6.39 in | 255/30R20 / 245/35R19 | 5x114.3 | 56.1 mm | M12 x 1.25 |
| 2.0T (CBA-VAB) · EJ20, H4, Petrol | 8.5x19 | 8x18 | ET45 | 6.02 in | 235/35R19 / 245/50R18 | 5x114.3 | 56.1 mm | M12 x 1.25 |
| 2.0T S207 (CBA-VAB) · EJ20, H4, Petrol | 7.5x20 | 8.5x19 | ET65 / ET43 | 6.31 in | 265/25R20 / 265/40R19 | 5x114.3 | 56.1 mm | M12 x 1.25 |
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 2017 Subaru WRX STI
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.