215/85R16 vs 235/85R16
235/85R16 is outside the ±3% rule as a replacement for 215/85R16: the diameter differs by +4.40%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 235/85R16 on a car calibrated for 215/85R16, the speedometer reads 57.5 mph when you're really doing 60, and the odometer under-counts by 4.4%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.3 mph |
| 45 mph | 47.0 mph |
| 60 mph | 62.6 mph |
| 70 mph | 73.1 mph |
| 80 mph | 83.5 mph |
Other sizes close to 215/85R16
- 215/85R16 vs 265/75R16+4.15%
- 215/85R16 vs 245/70R17+0.38%
- 215/85R16 vs 245/75R16+0.26%
- 215/85R16 vs 225/75R16-3.63%
- 215/85R16 vs 265/65R17+0.57%
- 215/85R16 vs 265/70R16+0.71%
- 215/85R16 vs 235/70R16-4.73%
- 215/85R16 vs 245/70R16-2.91%
- 215/85R16 vs 255/70R16-1.10%
- 215/85R16 vs 235/75R16-1.68%
- 215/85R16 vs 255/65R16-4.40%
- 215/85R16 vs 275/70R16+2.53%
Questions
Can I replace 215/85R16 with 235/85R16?
235/85R16 is outside the ±3% rule as a replacement for 215/85R16: the diameter differs by +4.40%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 215/85R16 and 235/85R16?
235/85R16 is 1.34" taller and 20 mm wider; the sidewall is +0.67". At an indicated 60 mph you'd actually be doing 62.6 mph.
Will 235/85R16 fit on 215/85R16 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.