35x12.50R17 vs 37x12.50R17
37x12.50R17 is 5.7% taller (+2.00 in) and the same width than 35x12.50R17.
37x12.50R17 is 5.7% taller than 35x12.50R17. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears.
| 35x12.50R17 | 37x12.50R17 | Change | |
|---|---|---|---|
| Diameter | 35.00″ | 37.00″ | +2.00″+5.7% |
| Width | 12.50″ | 12.50″ | 0.00″0.0% |
| Sidewall | 9.00″ | 10.00″ | +1.00″+11.1% |
| Circumference | 110.0″ | 116.2″ | +6.3″+5.7% |
| Wheel | 17″ | 17″ | Same |
| Revs per mile | 576 | 545 | −31 |
Real speed on 37x12.50R17.
Change in height under the axle.
On the same wheel, split inboard and outboard.
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35x12.50R17 or 37x12.50R17?
Can I use 37x12.50R17 instead of 35x12.50R17?
37x12.50R17 is 5.7% taller than 35x12.50R17. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears. 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 37x12.50R17 you are really doing 63.4 mph if the speedometer was set up for 35x12.50R17. Going the other way, 35x12.50R17 would make it read 56.8 mph at a real 60.
How much ground clearance does it change?
Half the diameter difference: +1.00 in (+25 mm) under the axle.