35x12.50R20 vs 295/65R20
295/65R20 is a safe swap for 35x12.50R20 by the usual ±3% rule: the diameter differs by +0.28%.
Side by side
| 35x12.50R20 | 295/65R20 | Difference | |
|---|---|---|---|
| Overall diameter | 35.00" | 35.10" | +0.10" (+0.28%) |
| Section width | 318 mm | 295 mm | -23 mm |
| Sidewall | 7.50" | 7.55" | +0.05" |
| Rim | 20" | 20" | same |
| Circumference | 110.0" | 110.3" | +0.3" |
| Revs per mile | 576 | 575 | -2 |
| Ride height | — | — | +0.05" |
| Speedometer reads 60 mph | 60.0 | 60.2 | +0.2 mph |
Speedometer and odometer
With 295/65R20 on a car calibrated for 35x12.50R20, the speedometer reads 59.8 mph when you're really doing 60, and the odometer under-counts by 0.3%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.1 mph |
| 45 mph | 45.1 mph |
| 60 mph | 60.2 mph |
| 70 mph | 70.2 mph |
| 80 mph | 80.2 mph |
Other sizes close to 35x12.50R20
Questions
Can I replace 35x12.50R20 with 295/65R20?
295/65R20 is a safe swap for 35x12.50R20 by the usual ±3% rule: the diameter differs by +0.28%.
What's the difference between 35x12.50R20 and 295/65R20?
295/65R20 is 0.10" taller and 23 mm narrower; the sidewall is +0.05". At an indicated 60 mph you'd actually be doing 60.2 mph.
Will 295/65R20 fit on 35x12.50R20 wheels?
Both use a 20" rim, so the wheel diameter matches; check the wheel's width range for a 295 mm tire and the fender clearance.