295/60R20 vs 35x12.50R20
35x12.50R20 is outside the ±3% rule as a replacement for 295/60R20: the diameter differs by +3.13%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Side by side
| 295/60R20 | 35x12.50R20 | Difference | |
|---|---|---|---|
| Overall diameter | 33.94" | 35.00" | +1.06" (+3.13%) |
| Section width | 295 mm | 318 mm | +23 mm |
| Sidewall | 6.97" | 7.50" | +0.53" |
| Rim | 20" | 20" | same |
| Circumference | 106.6" | 110.0" | +3.3" |
| Revs per mile | 594 | 576 | -18 |
| Ride height | — | — | +0.53" |
| Speedometer reads 60 mph | 60.0 | 61.9 | +1.9 mph |
Speedometer and odometer
With 35x12.50R20 on a car calibrated for 295/60R20, the speedometer reads 58.2 mph when you're really doing 60, and the odometer under-counts by 3.1%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.9 mph |
| 45 mph | 46.4 mph |
| 60 mph | 61.9 mph |
| 70 mph | 72.2 mph |
| 80 mph | 82.5 mph |
Other sizes close to 295/60R20
- 295/60R20 vs 275/60R20-2.78%
- 295/60R20 vs 275/65R20+0.41%
- 295/60R20 vs 265/60R20-4.18%
- 295/60R20 vs 305/55R20-2.15%
- 295/60R20 vs 285/55R20-4.70%
- 295/60R20 vs 285/60R20-1.39%
- 295/60R20 vs 33x12.50R20-2.76%
- 295/60R20 vs 295/55R20-3.42%
- 295/60R20 vs 295/65R20+3.42%
- 295/60R20 vs 285/65R20+1.91%
- 295/60R20 vs 325/60R20+4.18%
- 295/60R20 vs 35x11.50R20+3.13%
Questions
Can I replace 295/60R20 with 35x12.50R20?
35x12.50R20 is outside the ±3% rule as a replacement for 295/60R20: the diameter differs by +3.13%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 295/60R20 and 35x12.50R20?
35x12.50R20 is 1.06" taller and 23 mm wider; the sidewall is +0.53". At an indicated 60 mph you'd actually be doing 61.9 mph.
Will 35x12.50R20 fit on 295/60R20 wheels?
Both use a 20" rim, so the wheel diameter matches; check the wheel's width range for a 318 mm tire and the fender clearance.