225/60R17 vs 255/60R17
255/60R17 is outside the ±3% rule as a replacement for 225/60R17: the diameter differs by +5.13%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 255/60R17 on a car calibrated for 225/60R17, the speedometer reads 57.1 mph when you're really doing 60, and the odometer under-counts by 5.1%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.5 mph |
| 45 mph | 47.3 mph |
| 60 mph | 63.1 mph |
| 70 mph | 73.6 mph |
| 80 mph | 84.1 mph |
Other sizes close to 225/60R17
- 225/60R17 vs 225/55R17-3.21%
- 225/60R17 vs 225/65R17+3.21%
- 225/60R17 vs 235/55R17-1.64%
- 225/60R17 vs 215/55R17-4.77%
- 225/60R17 vs 225/55R18+0.41%
- 225/60R17 vs 235/60R17+1.71%
- 225/60R17 vs 215/65R17+1.35%
- 225/60R17 vs 215/70R16+0.80%
- 225/60R17 vs 215/60R17-1.71%
- 225/60R17 vs 245/50R18+0.06%
- 225/60R17 vs 235/50R17-4.99%
- 225/60R17 vs 225/65R16-0.41%
Questions
Can I replace 225/60R17 with 255/60R17?
255/60R17 is outside the ±3% rule as a replacement for 225/60R17: the diameter differs by +5.13%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 225/60R17 and 255/60R17?
255/60R17 is 1.42" taller and 30 mm wider; the sidewall is +0.71". At an indicated 60 mph you'd actually be doing 63.1 mph.
Will 255/60R17 fit on 225/60R17 wheels?
Both use a 17" rim, so the wheel diameter matches; check the wheel's width range for a 255 mm tire and the fender clearance.