295/55R20 vs 33x12.50R20
33x12.50R20 is a safe swap for 295/55R20 by the usual ±3% rule: the diameter differs by +0.68%.
Side by side
| 295/55R20 | 33x12.50R20 | Difference | |
|---|---|---|---|
| Overall diameter | 32.78" | 33.00" | +0.22" (+0.68%) |
| Section width | 295 mm | 318 mm | +23 mm |
| Sidewall | 6.39" | 6.50" | +0.11" |
| Rim | 20" | 20" | same |
| Circumference | 103.0" | 103.7" | +0.7" |
| Revs per mile | 615 | 611 | -4 |
| Ride height | — | — | +0.11" |
| Speedometer reads 60 mph | 60.0 | 60.4 | +0.4 mph |
Speedometer and odometer
With 33x12.50R20 on a car calibrated for 295/55R20, the speedometer reads 59.6 mph when you're really doing 60, and the odometer under-counts by 0.7%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.2 mph |
| 45 mph | 45.3 mph |
| 60 mph | 60.4 mph |
| 70 mph | 70.5 mph |
| 80 mph | 80.5 mph |
Other sizes close to 295/55R20
- 295/55R20 vs 275/55R20-2.64%
- 295/55R20 vs 275/60R20+0.66%
- 295/55R20 vs 275/65R20+3.96%
- 295/55R20 vs 265/60R20-0.78%
- 295/55R20 vs 305/55R20+1.32%
- 295/55R20 vs 285/55R20-1.32%
- 295/55R20 vs 285/60R20+2.10%
- 295/55R20 vs 295/60R20+3.54%
- 295/55R20 vs 285/50R20-4.74%
- 295/55R20 vs 245/60R20-3.66%
- 295/55R20 vs 305/50R20-2.34%
- 295/55R20 vs 255/60R20-2.22%
Questions
Can I replace 295/55R20 with 33x12.50R20?
33x12.50R20 is a safe swap for 295/55R20 by the usual ±3% rule: the diameter differs by +0.68%.
What's the difference between 295/55R20 and 33x12.50R20?
33x12.50R20 is 0.22" taller and 23 mm wider; the sidewall is +0.11". At an indicated 60 mph you'd actually be doing 60.4 mph.
Will 33x12.50R20 fit on 295/55R20 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.