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.
OE on the Lexus RX (AL20/AL30 2015-2023), Toyota Highlander (XU70 2020+) and Nissan Murano (Z52). Load index 102V or 106W reinforced. Narrow 235 mm at this rim diameter favors fuel economy on the heavier crossover trims.
Mainstream sedan sizes balance compound longevity against light all-season handling. When replacing, match the OE speed rating (H or V on most trims) — installing a lower rating voids many manufacturer load-test certifications and is illegal on autobahn-rated vehicles. Wheel-well clearance is rarely a concern at this rim diameter; speedometer drift across factory alternatives stays well inside the ±3% legal window.
| 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 |