2020 Buick Regal Sportback Tire Size
Confirmed OEM tire sizes for this model year. Multiple sizes may apply depending on trim and wheel package — all catalog options are listed.
- Option225/55R17
- Option235/45R18
- Option245/35R20
- Option245/40R19
- Option245/45R18
All confirmed configurations
| Size | Position | Width | Aspect | Rim | Load | Speed |
|---|---|---|---|---|---|---|
| 225/55R17 (run-flat) | Front / all | 225 | 55 | 17" | — | — |
| 235/45R18 (run-flat) | Front / all | 235 | 45 | 18" | — | — |
| 245/35R20 (run-flat) | Front / all | 245 | 35 | 20" | 93 | W |
| 245/40R19 (run-flat) | Front / all | 245 | 40 | 19" | 95 | V |
| 245/45R18 (run-flat) | Front / all | 245 | 45 | 18" | 95 | V |