315/40R21
All technical dimensions and alternatives for this tire size.
| Technical Specs | |
|---|---|
| Diameter | 785.4 mm (30.92 in) |
| Section Width | 315 mm (12.4 in) |
| Sidewall Height | 126 mm |
| Circumference | 2467.4 mm |
| Revs / km | 405.3 |
| Rim Diameter (in) | R21 (533.4 mm) |
Alternative sizes (±3%)
Equivalents on other rim diameters
Calculations use nominal dimensions; actual measurements can vary ±1–2% by manufacturer and model. Always follow your owner's manual and door-jamb placard.
315/40R21