35x12.50R15 vs 295/70R17
295/70R17 is 1.74 in (44.2 mm) shorter than 35x12.50R15, a −4.97% diameter difference. With the speedometer set for 35x12.50R15, an indicated 60 mph is 57.0 mph on 295/70R17.
Is this a safe swap?
Diameter difference −4.97%: outside the ±3% guideline
By overall diameter alone, 295/70R17 falls outside the ±3% range commonly used as a guideline when replacing 35x12.50R15; speedometer and ride-height changes are larger. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.
| Measurement | 35x12.50R15 | 295/70R17 | Difference | % diff |
|---|---|---|---|---|
| Overall diameter | 35.00 in (889.0 mm) | 33.26 in (844.8 mm) | −1.74 in (−44.2 mm) | −4.97% |
| Sidewall height | 10.00 in (254.0 mm) | 8.13 in (206.5 mm) | −1.87 in (−47.5 mm) | −18.70% |
| Section width | 12.50 in (317.5 mm) | 11.61 in (295.0 mm) | −0.89 in (−22.5 mm) | −7.09% |
| Circumference | 109.96 in (2,792.9 mm) | 104.49 in (2,654.0 mm) | −5.47 in (−138.9 mm) | −4.97% |
| Revolutions per mile | 576 | 606 | +30 | +5.23% |
| Indicated | Actual on 35x12.50R15 | Actual on 295/70R17 | Difference |
|---|---|---|---|
| 30 mph | 30.0 mph | 28.5 mph | −1.5 mph |
| 60 mph | 60.0 mph | 57.0 mph | −3.0 mph |
| 75 mph | 75.0 mph | 71.3 mph | −3.7 mph |
Ride-height change: 295/70R17 lowers the vehicle by 0.87 in (22.1 mm) at the axle (half the −44.2 mm diameter difference).
295/70R17 is 1.74 in shorter than 35x12.50R15 and 23 mm narrower, a 4.97% difference in overall diameter.
With the speedometer calibrated for 35x12.50R15, an indicated 60 mph is actually 57.0 mph on 295/70R17, and revolutions per mile change from 576 to 606.
295/70R17 mounts on a 17-inch wheel, a plus-2 fitment from the 15-inch wheel of 35x12.50R15.
Size pages
Other comparisons with 35x12.50R15
- 35x12.50R15 vs 315/75R16
- 35x12.50R15 vs 285/75R17
- 35x12.50R15 vs 315/70R17
- 35x12.50R15 vs 35x11.50R17
- 35x12.50R15 vs 35x12.50R17
- 35x12.50R15 vs 315/75R17
Other comparisons with 295/70R17
- 33x12.50R15 vs 295/70R17
- 305/70R16 vs 295/70R17
- 285/75R16 vs 295/70R17
- 33x12.50R16 vs 295/70R17
- 255/85R16 vs 295/70R17
- 315/75R16 vs 295/70R17
- 275/70R17 vs 295/70R17
- 305/65R17 vs 295/70R17
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.