235/75R16 vs 215/85R16
215/85R16 is a safe swap for 235/75R16 by the usual ±3% rule: the diameter differs by +1.71%.
Speedometer and odometer
With 215/85R16 on a car calibrated for 235/75R16, the speedometer reads 59.0 mph when you're really doing 60, and the odometer under-counts by 1.7%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.5 mph |
| 45 mph | 45.8 mph |
| 60 mph | 61.0 mph |
| 70 mph | 71.2 mph |
| 80 mph | 81.4 mph |
Other sizes close to 235/75R16
- 235/75R16 vs 245/75R16+1.98%
- 235/75R16 vs 225/75R16-1.98%
- 235/75R16 vs 265/70R16+2.44%
- 235/75R16 vs 235/70R16-3.10%
- 235/75R16 vs 245/70R16-1.25%
- 235/75R16 vs 255/65R17+0.58%
- 235/75R16 vs 225/70R16-4.94%
- 235/75R16 vs 255/70R16+0.59%
- 235/75R16 vs 30x9.50R15+0.41%
- 235/75R16 vs 235/70R17+0.25%
- 235/75R16 vs 255/65R16-2.77%
- 235/75R16 vs 275/70R16+4.28%
Questions
Can I replace 235/75R16 with 215/85R16?
215/85R16 is a safe swap for 235/75R16 by the usual ±3% rule: the diameter differs by +1.71%.
What's the difference between 235/75R16 and 215/85R16?
215/85R16 is 0.51" taller and 20 mm narrower; the sidewall is +0.26". At an indicated 60 mph you'd actually be doing 61.0 mph.
Will 215/85R16 fit on 235/75R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 215 mm tire and the fender clearance.