295/70R18 vs 35x12.50R18
35x12.50R18 is a safe swap for 295/70R18 by the usual ±3% rule: the diameter differs by +2.16%.
Side by side
| 295/70R18 | 35x12.50R18 | Difference | |
|---|---|---|---|
| Overall diameter | 34.26" | 35.00" | +0.74" (+2.16%) |
| Section width | 295 mm | 318 mm | +23 mm |
| Sidewall | 8.13" | 8.50" | +0.37" |
| Rim | 18" | 18" | same |
| Circumference | 107.6" | 110.0" | +2.3" |
| Revs per mile | 589 | 576 | -12 |
| Ride height | — | — | +0.37" |
| Speedometer reads 60 mph | 60.0 | 61.3 | +1.3 mph |
Speedometer and odometer
With 35x12.50R18 on a car calibrated for 295/70R18, the speedometer reads 58.7 mph when you're really doing 60, and the odometer under-counts by 2.2%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.6 mph |
| 45 mph | 46.0 mph |
| 60 mph | 61.3 mph |
| 70 mph | 71.5 mph |
| 80 mph | 81.7 mph |
Other sizes close to 295/70R18
- 295/70R18 vs 275/70R18-3.22%
- 295/70R18 vs 265/70R18-4.83%
- 295/70R18 vs 315/70R17+0.30%
- 295/70R18 vs 285/65R18-4.88%
- 295/70R18 vs 33x12.50R18-3.68%
- 295/70R18 vs 285/75R18+1.67%
- 295/70R18 vs 325/65R18+1.09%
- 295/70R18 vs 305/70R18+1.61%
- 295/70R18 vs 305/65R18-1.90%
- 295/70R18 vs 285/70R18-1.61%
- 295/70R18 vs 325/60R18-2.64%
Questions
Can I replace 295/70R18 with 35x12.50R18?
35x12.50R18 is a safe swap for 295/70R18 by the usual ±3% rule: the diameter differs by +2.16%.
What's the difference between 295/70R18 and 35x12.50R18?
35x12.50R18 is 0.74" taller and 23 mm wider; the sidewall is +0.37". At an indicated 60 mph you'd actually be doing 61.3 mph.
Will 35x12.50R18 fit on 295/70R18 wheels?
Both use a 18" rim, so the wheel diameter matches; check the wheel's width range for a 318 mm tire and the fender clearance.