285/75R17 vs 35x12.50R17
35x12.50R17 is 3.5% taller (+1.17 in) and 1.28 in wider than 285/75R17.
35x12.50R17 is 3.5% taller than 285/75R17. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock.
| 285/75R17 | 35x12.50R17 | Change | |
|---|---|---|---|
| Diameter | 33.83″ | 35.00″ | +1.17″+3.5% |
| Width | 11.22″ | 12.50″ | +1.28″+11.4% |
| Sidewall | 8.42″ | 9.00″ | +0.58″+6.9% |
| Circumference | 106.3″ | 110.0″ | +3.7″+3.5% |
| Wheel | 17″ | 17″ | Same |
| Revs per mile | 596 | 576 | −20 |
Real speed on 35x12.50R17.
Change in height under the axle.
On the same wheel, split inboard and outboard.
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285/75R17 or 35x12.50R17?
Can I use 35x12.50R17 instead of 285/75R17?
35x12.50R17 is 3.5% taller than 285/75R17. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock. Also match or beat the original load index and speed rating, and check that the wheel width suits the new tire.
Will my speedometer be off?
At an indicated 60 mph on 35x12.50R17 you are really doing 62.1 mph if the speedometer was set up for 285/75R17. Going the other way, 285/75R17 would make it read 58.0 mph at a real 60.
How much ground clearance does it change?
Half the diameter difference: +0.58 in (+15 mm) under the axle.