225/65R16 vs 235/70R16
235/70R16 is outside the ±3% rule as a replacement for 225/65R16: the diameter differs by +5.22%, 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 225/65R16, the speedometer reads 57.0 mph when you're really doing 60, and the odometer under-counts by 5.2%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.6 mph |
| 45 mph | 47.4 mph |
| 60 mph | 63.1 mph |
| 70 mph | 73.7 mph |
| 80 mph | 84.2 mph |
Other sizes close to 225/65R16
- 225/65R16 vs 225/60R17+0.41%
- 225/65R16 vs 215/65R16-1.86%
- 225/65R16 vs 215/60R16-4.94%
- 225/65R16 vs 215/70R16+1.22%
- 225/65R16 vs 205/65R16-3.72%
- 225/65R16 vs 235/65R16+1.86%
- 225/65R16 vs 225/60R16-3.22%
- 225/65R16 vs 225/70R16+3.22%
- 225/65R16 vs 235/60R16-1.50%
- 225/65R16 vs 225/70R15-0.41%
- 225/65R16 vs 215/75R15+0.66%
- 225/65R16 vs 195/75R160.00%
Questions
Can I replace 225/65R16 with 235/70R16?
235/70R16 is outside the ±3% rule as a replacement for 225/65R16: the diameter differs by +5.22%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 225/65R16 and 235/70R16?
235/70R16 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 235/70R16 fit on 225/65R16 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.