215/70R16 vs 255/65R16
255/65R16 is outside the ±3% rule as a replacement for 215/70R16: the diameter differs by +4.31%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 255/65R16 on a car calibrated for 215/70R16, the speedometer reads 57.5 mph when you're really doing 60, and the odometer under-counts by 4.3%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.3 mph |
| 45 mph | 46.9 mph |
| 60 mph | 62.6 mph |
| 70 mph | 73.0 mph |
| 80 mph | 83.4 mph |
Other sizes close to 215/70R16
- 215/70R16 vs 225/60R17-0.79%
- 215/70R16 vs 215/65R16-3.04%
- 215/70R16 vs 235/70R16+3.96%
- 215/70R16 vs 235/60R17+0.90%
- 215/70R16 vs 215/65R17+0.55%
- 215/70R16 vs 205/65R16-4.88%
- 215/70R16 vs 235/65R16+0.64%
- 215/70R16 vs 225/60R16-4.38%
- 215/70R16 vs 225/70R16+1.98%
- 215/70R16 vs 225/65R16-1.20%
- 215/70R16 vs 235/60R16-2.69%
- 215/70R16 vs 215/75R15-0.55%
Questions
Can I replace 215/70R16 with 255/65R16?
255/65R16 is outside the ±3% rule as a replacement for 215/70R16: the diameter differs by +4.31%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 215/70R16 and 255/65R16?
255/65R16 is 1.20" taller and 40 mm wider; the sidewall is +0.60". At an indicated 60 mph you'd actually be doing 62.6 mph.
Will 255/65R16 fit on 215/70R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 255 mm tire and the fender clearance.