The 265/50R18 is a common tire size for SUVs and crossovers such as Toyota RAV4, Honda CR-V, and Ford Explorer.
With a 132.5 mm sidewall (50% 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 235/45R18, this tire's overall diameter differs by +8.0% — a speedometer calibrated for 235/45R18 would read 92.6 km/h at an actual 100 km/h.
When replacing, verify that your wheel well can accommodate the 722.2 mm overall diameter. Keep speedometer deviation within ±3% for safety and legal compliance.
| Tire Code | 265/50R18 |
| Section Width | 265 mm |
| Aspect Ratio | 50% |
| Rim Diameter | 18" |
| Sidewall Height | 132.5 mm |
| Overall Diameter | 722.2 mm / 28.43" |
| Circumference | 2268.9 mm / 89.33" |
| Revolutions per km | 440.8 |
| Revolutions per mile | 709.3 |
| Tire Code | OD (mm) | Δ mm | Δ % | Speedo at 100 km/h |
|---|---|---|---|---|
| 265/50R18 (current) | 722.2 | — | — | 100.0 |
| 265/50R19 | 747.6 | +25.4 | +3.5% | 96.6 |
| 265/50R20 | 773.0 | +50.8 | +7.0% | 93.4 |
| 265/60R18 | 775.2 | +53.0 | +7.3% | 93.2 |