245/75R16 vs 245/70R17
245/70R17 is a safe swap for 245/75R16 by the usual ±3% rule: the diameter differs by +0.12%.
Speedometer and odometer
With 245/70R17 on a car calibrated for 245/75R16, the speedometer reads 59.9 mph when you're really doing 60, and the odometer under-counts by 0.1%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.0 mph |
| 45 mph | 45.1 mph |
| 60 mph | 60.1 mph |
| 70 mph | 70.1 mph |
| 80 mph | 80.1 mph |
Other sizes close to 245/75R16
- 245/75R16 vs 265/75R16+3.88%
- 245/75R16 vs 225/75R16-3.88%
- 245/75R16 vs 265/65R17+0.31%
- 245/75R16 vs 265/70R16+0.45%
- 245/75R16 vs 235/70R16-4.97%
- 245/75R16 vs 235/85R16+4.13%
- 245/75R16 vs 245/70R16-3.17%
- 245/75R16 vs 215/85R16-0.26%
- 245/75R16 vs 255/70R16-1.36%
- 245/75R16 vs 235/75R16-1.94%
- 245/75R16 vs 255/65R16-4.65%
- 245/75R16 vs 275/70R16+2.26%
Questions
Can I replace 245/75R16 with 245/70R17?
245/70R17 is a safe swap for 245/75R16 by the usual ±3% rule: the diameter differs by +0.12%.
What's the difference between 245/75R16 and 245/70R17?
245/70R17 is 0.04" taller and 0 mm wider; the sidewall is -0.48". At an indicated 60 mph you'd actually be doing 60.1 mph.
Will 245/70R17 fit on 245/75R16 wheels?
No — 245/75R16 needs a 16" wheel and 245/70R17 a 17" wheel. This is a plus/minus-size swap that changes wheels too.