SidewallerTire & wheel calculators

265/70R17 vs 33x12.50R17

33x12.50R17 is 4.4% taller (+1.39 in) and 2.07 in wider than 265/70R17.

Caution
Check before you buy

33x12.50R17 is 4.4% taller than 265/70R17. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock.

265/70R1733x12.50R17Change
Diameter31.61″33.00″+1.39″+4.4%
Width10.43″12.50″+2.07″+19.8%
Sidewall7.30″8.00″+0.70″+9.5%
Circumference99.3″103.7″+4.4″+4.4%
Wheel17″17″Same
Revs per mile638611−27
SideTread
265/70R1733x12.50R17
Speedometer shows 60 mph62.6mph

Real speed on 33x12.50R17.

Ground clearance+0.70in

Change in height under the axle.

Width per side+1.03in

On the same wheel, split inboard and outboard.

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265/70R17 or 33x12.50R17?

Can I use 33x12.50R17 instead of 265/70R17?

33x12.50R17 is 4.4% taller than 265/70R17. 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 33x12.50R17 you are really doing 62.6 mph if the speedometer was set up for 265/70R17. Going the other way, 265/70R17 would make it read 57.5 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.70 in (+18 mm) under the axle.

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