215/55R17 vs 235/55R17
235/55R17 is outside the ±3% rule as a replacement for 215/55R17: the diameter differs by +3.29%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 235/55R17 on a car calibrated for 215/55R17, the speedometer reads 58.1 mph when you're really doing 60, and the odometer under-counts by 3.3%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.0 mph |
| 45 mph | 46.5 mph |
| 60 mph | 62.0 mph |
| 70 mph | 72.3 mph |
| 80 mph | 82.6 mph |
Other sizes close to 215/55R17
- 215/55R17 vs 225/50R17-1.72%
- 215/55R17 vs 225/55R17+1.65%
- 215/55R17 vs 235/45R18+0.06%
- 215/55R17 vs 205/50R17-4.71%
- 215/55R17 vs 215/50R17-3.22%
- 215/55R17 vs 235/45R17-3.74%
- 215/55R17 vs 245/45R17-2.39%
- 215/55R17 vs 215/60R16-0.58%
- 215/55R17 vs 215/60R17+3.22%
- 215/55R17 vs 205/65R16+0.69%
- 215/55R17 vs 235/50R17-0.22%
- 215/55R17 vs 255/40R17-4.86%
Questions
Can I replace 215/55R17 with 235/55R17?
235/55R17 is outside the ±3% rule as a replacement for 215/55R17: the diameter differs by +3.29%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 215/55R17 and 235/55R17?
235/55R17 is 0.87" taller and 20 mm wider; the sidewall is +0.43". At an indicated 60 mph you'd actually be doing 62.0 mph.
Will 235/55R17 fit on 215/55R17 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.