235/60R17 vs 275/55R17
275/55R17 is a safe swap for 235/60R17 by the usual ±3% rule: the diameter differs by +2.87%.
Speedometer and odometer
With 275/55R17 on a car calibrated for 235/60R17, the speedometer reads 58.3 mph when you're really doing 60, and the odometer under-counts by 2.9%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.9 mph |
| 45 mph | 46.3 mph |
| 60 mph | 61.7 mph |
| 70 mph | 72.0 mph |
| 80 mph | 82.3 mph |
Other sizes close to 235/60R17
- 235/60R17 vs 225/55R17-4.83%
- 235/60R17 vs 225/65R17+1.47%
- 235/60R17 vs 235/55R18+0.27%
- 235/60R17 vs 235/65R17+3.29%
- 235/60R17 vs 235/55R17-3.29%
- 235/60R17 vs 225/60R17-1.68%
- 235/60R17 vs 215/65R17-0.35%
- 235/60R17 vs 215/70R16-0.90%
- 235/60R17 vs 215/60R17-3.36%
- 235/60R17 vs 235/65R16-0.27%
- 235/60R17 vs 255/60R17+3.36%
Questions
Can I replace 235/60R17 with 275/55R17?
275/55R17 is a safe swap for 235/60R17 by the usual ±3% rule: the diameter differs by +2.87%.
What's the difference between 235/60R17 and 275/55R17?
275/55R17 is 0.81" taller and 40 mm wider; the sidewall is +0.40". At an indicated 60 mph you'd actually be doing 61.7 mph.
Will 275/55R17 fit on 235/60R17 wheels?
Both use a 17" rim, so the wheel diameter matches; check the wheel's width range for a 275 mm tire and the fender clearance.