Plus Sizing Calculator
Calculate alternative tire sizes that preserve overall diameter when upsizing your wheels. Uses the ±3% safety rule.
Current size
Target rim diameter
| Compatible sizes | Diameter difference | |
|---|---|---|
| 285/35R17 | -0.09 % | Tire Size Comparison → |
| 335/30R17 | +0.14 % | Tire Size Comparison → |
| 155/65R17 | +0.22 % | Tire Size Comparison → |
| 165/60R17 | -0.33 % | Tire Size Comparison → |
| 135/75R17 | +0.38 % | Tire Size Comparison → |
| 225/45R17 | +0.38 % | Tire Size Comparison → |
| 145/70R17 | +0.46 % | Tire Size Comparison → |
| 185/55R17 | +0.54 % | Tire Size Comparison → |
| 255/40R17 | +0.62 % | Tire Size Comparison → |
| 245/40R17 | -0.65 % | Tire Size Comparison → |
| 205/50R17 | +0.78 % | Tire Size Comparison → |
| 195/50R17 | -0.81 % | Tire Size Comparison → |
Calculations use nominal dimensions; actual measurements can vary ±1–2% by manufacturer and model. Always follow your owner's manual and door-jamb placard.