205/55R17 vs 235/55R17
235/55R17 is outside the ±3% rule as a replacement for 205/55R17: the diameter differs by +5.02%, 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 205/55R17, the speedometer reads 57.1 mph when you're really doing 60, and the odometer under-counts by 5.0%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.5 mph |
| 45 mph | 47.3 mph |
| 60 mph | 63.0 mph |
| 70 mph | 73.5 mph |
| 80 mph | 84.0 mph |
Other sizes close to 205/55R17
- 205/55R17 vs 225/45R17-3.50%
- 205/55R17 vs 225/45R18+0.37%
- 205/55R17 vs 245/40R18-0.62%
- 205/55R17 vs 225/50R17-0.08%
- 205/55R17 vs 225/55R17+3.35%
- 205/55R17 vs 215/45R17-4.87%
- 205/55R17 vs 205/50R17-3.12%
- 205/55R17 vs 215/55R17+1.67%
- 205/55R17 vs 215/50R17-1.60%
- 205/55R17 vs 235/45R17-2.13%
- 205/55R17 vs 245/45R17-0.76%
- 205/55R17 vs 205/60R16-0.75%
Questions
Can I replace 205/55R17 with 235/55R17?
235/55R17 is outside the ±3% rule as a replacement for 205/55R17: the diameter differs by +5.02%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 205/55R17 and 235/55R17?
235/55R17 is 1.30" taller and 30 mm wider; the sidewall is +0.65". At an indicated 60 mph you'd actually be doing 63.0 mph.
Will 235/55R17 fit on 205/55R17 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.