225/55R17 vs 235/55R17
235/55R17 is a safe swap for 225/55R17 by the usual ±3% rule: the diameter differs by +1.62%.
Speedometer and odometer
With 235/55R17 on a car calibrated for 225/55R17, the speedometer reads 59.0 mph when you're really doing 60, and the odometer under-counts by 1.6%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.5 mph |
| 45 mph | 45.7 mph |
| 60 mph | 61.0 mph |
| 70 mph | 71.1 mph |
| 80 mph | 81.3 mph |
Other sizes close to 225/55R17
- 225/55R17 vs 225/50R17-3.31%
- 225/55R17 vs 245/45R18-0.24%
- 225/55R17 vs 215/55R17-1.62%
- 225/55R17 vs 225/50R18+0.43%
- 225/55R17 vs 225/60R17+3.31%
- 225/55R17 vs 215/50R17-4.78%
- 225/55R17 vs 245/45R17-3.97%
- 225/55R17 vs 215/65R16+0.97%
- 225/55R17 vs 215/65R17+4.71%
- 225/55R17 vs 215/60R17+1.55%
- 225/55R17 vs 205/65R16-0.94%
- 225/55R17 vs 225/60R16-0.43%
Questions
Can I replace 225/55R17 with 235/55R17?
235/55R17 is a safe swap for 225/55R17 by the usual ±3% rule: the diameter differs by +1.62%.
What's the difference between 225/55R17 and 235/55R17?
235/55R17 is 0.43" taller and 10 mm wider; the sidewall is +0.22". At an indicated 60 mph you'd actually be doing 61.0 mph.
Will 235/55R17 fit on 225/55R17 wheels?
Both use a 17" rim, so the wheel diameter matches; check the wheel's width range for a 235 mm tire and the fender clearance.