235/65R16 vs 235/70R16
235/70R16 is outside the ±3% rule as a replacement for 235/65R16: the diameter differs by +3.30%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 235/70R16 on a car calibrated for 235/65R16, the speedometer reads 58.1 mph when you're really doing 60, and the odometer under-counts by 3.3%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.0 mph |
| 45 mph | 46.5 mph |
| 60 mph | 62.0 mph |
| 70 mph | 72.3 mph |
| 80 mph | 82.6 mph |
Other sizes close to 235/65R16
- 235/65R16 vs 225/75R16+4.50%
- 235/65R16 vs 215/65R16-3.65%
- 235/65R16 vs 235/60R17+0.27%
- 235/65R16 vs 215/70R16-0.63%
- 235/65R16 vs 215/65R17-0.08%
- 235/65R16 vs 225/60R16-4.99%
- 235/65R16 vs 225/70R16+1.33%
- 235/65R16 vs 225/65R16-1.83%
- 235/65R16 vs 235/60R16-3.30%
- 235/65R16 vs 195/75R16-1.83%
- 235/65R16 vs 255/65R16+3.65%
- 235/65R16 vs 205/70R16-2.60%
Questions
Can I replace 235/65R16 with 235/70R16?
235/70R16 is outside the ±3% rule as a replacement for 235/65R16: the diameter differs by +3.30%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 235/65R16 and 235/70R16?
235/70R16 is 0.93" taller and 0 mm wider; the sidewall is +0.46". At an indicated 60 mph you'd actually be doing 62.0 mph.
Will 235/70R16 fit on 235/65R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 235 mm tire and the fender clearance.