235/70R16 vs 245/70R16
245/70R16 is a safe swap for 235/70R16 by the usual ±3% rule: the diameter differs by +1.90%.
Speedometer and odometer
With 245/70R16 on a car calibrated for 235/70R16, the speedometer reads 58.9 mph when you're really doing 60, and the odometer under-counts by 1.9%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.6 mph |
| 45 mph | 45.9 mph |
| 60 mph | 61.1 mph |
| 70 mph | 71.3 mph |
| 80 mph | 81.5 mph |
Other sizes close to 235/70R16
- 235/70R16 vs 235/65R17+0.26%
- 235/70R16 vs 225/75R16+1.16%
- 235/70R16 vs 215/70R16-3.81%
- 235/70R16 vs 235/65R16-3.20%
- 235/70R16 vs 235/75R15-0.26%
- 235/70R16 vs 225/70R16-1.90%
- 235/70R16 vs 255/70R16+3.81%
- 235/70R16 vs 215/85R16+4.96%
- 235/70R16 vs 225/65R16-4.96%
- 235/70R16 vs 235/75R16+3.20%
- 235/70R16 vs 255/65R16+0.34%
- 235/70R16 vs 195/75R16-4.96%
Questions
Can I replace 235/70R16 with 245/70R16?
245/70R16 is a safe swap for 235/70R16 by the usual ±3% rule: the diameter differs by +1.90%.
What's the difference between 235/70R16 and 245/70R16?
245/70R16 is 0.55" taller and 10 mm wider; the sidewall is +0.28". At an indicated 60 mph you'd actually be doing 61.1 mph.
Will 245/70R16 fit on 235/70R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 245 mm tire and the fender clearance.