The 235/55R20 is a common tire size for SUVs and crossovers such as Toyota RAV4, Honda CR-V, and Ford Explorer.
With a 129.3 mm sidewall (55% aspect ratio), this tire offers a balanced blend of ride comfort and handling precision — versatile for both city driving and spirited cornering.
Compared to the baseline 265/50R20, this tire's overall diameter differs by -0.8% — a speedometer calibrated for 265/50R20 would read 100.8 km/h at an actual 100 km/h.
When replacing, verify that your wheel well can accommodate the 766.5 mm overall diameter. Keep speedometer deviation within ±3% for safety and legal compliance.
| Tire Code | 235/55R20 |
| Section Width | 235 mm |
| Aspect Ratio | 55% |
| Rim Diameter | 20" |
| Sidewall Height | 129.3 mm |
| Overall Diameter | 766.5 mm / 30.18" |
| Circumference | 2408.0 mm / 94.80" |
| Revolutions per km | 415.3 |
| Revolutions per mile | 668.3 |
| Tire Code | OD (mm) | Δ mm | Δ % | Speedo at 100 km/h |
|---|---|---|---|---|
| 235/55R17 | 690.3 | -76.2 | -9.9% | 111.0 |
| 235/55R18 | 715.7 | -50.8 | -6.6% | 107.1 |
| 235/55R20 (current) | 766.5 | — | — | 100.0 |
| 235/60R20 | 790.0 | +23.5 | +3.1% | 97.0 |
| 275/55R20 | 810.5 | +44.0 | +5.7% | 94.6 |