255/40R21
All technical dimensions and alternatives for this tire size.
| Technical Specs | |
|---|---|
| Diameter | 737.4 mm (29.03 in) |
| Section Width | 255 mm (10.04 in) |
| Sidewall Height | 102 mm |
| Circumference | 2316.6 mm |
| Revs / km | 431.7 |
| Rim Diameter (in) | R21 (533.4 mm) |
Alternative sizes (±3%)
Equivalents on other rim diameters
Vehicles using this size
Calculations use nominal dimensions; actual measurements can vary ±1–2% by manufacturer and model. Always follow your owner's manual and door-jamb placard.
255/40R21