235/60R17 vs 245/65R17
245/65R17 is outside the ±3% rule as a replacement for 235/60R17: the diameter differs by +5.11%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 245/65R17 on a car calibrated for 235/60R17, 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 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%
- 235/60R17 vs 275/55R17+2.87%
Questions
Can I replace 235/60R17 with 245/65R17?
245/65R17 is outside the ±3% rule as a replacement for 235/60R17: the diameter differs by +5.11%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 235/60R17 and 245/65R17?
245/65R17 is 1.44" taller and 10 mm wider; the sidewall is +0.72". At an indicated 60 mph you'd actually be doing 63.1 mph.
Will 245/65R17 fit on 235/60R17 wheels?
Both use a 17" rim, so the wheel diameter matches; check the wheel's width range for a 245 mm tire and the fender clearance.