SidewallerTire & wheel calculators

33x12.50R15 vs 35x12.50R15

35x12.50R15 is 6.1% taller (+2.00 in) and the same width than 33x12.50R15.

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Big change

35x12.50R15 is 6.1% taller than 33x12.50R15. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears.

33x12.50R1535x12.50R15Change
Diameter33.00″35.00″+2.00″+6.1%
Width12.50″12.50″0.00″0.0%
Sidewall9.00″10.00″+1.00″+11.1%
Circumference103.7″110.0″+6.3″+6.1%
Wheel15″15″Same
Revs per mile611576−35
SideTread
33x12.50R1535x12.50R15
Speedometer shows 60 mph63.6mph

Real speed on 35x12.50R15.

Ground clearance+1.00in

Change in height under the axle.

Width per side0.00in

On the same wheel, split inboard and outboard.

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33x12.50R15 or 35x12.50R15?

Can I use 35x12.50R15 instead of 33x12.50R15?

35x12.50R15 is 6.1% taller than 33x12.50R15. 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 35x12.50R15 you are really doing 63.6 mph if the speedometer was set up for 33x12.50R15. Going the other way, 33x12.50R15 would make it read 56.6 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +1.00 in (+25 mm) under the axle.

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