SidewallerTire & wheel calculators

265/40R22 vs 285/45R22

285/45R22 is 5.8% taller (+1.75 in) and 0.79 in wider than 265/40R22.

Large
Big change

285/45R22 is 5.8% taller than 265/40R22. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears.

265/40R22285/45R22Change
Diameter30.35″32.10″+1.75″+5.8%
Width10.43″11.22″+0.79″+7.5%
Sidewall4.17″5.05″+0.88″+21.0%
Circumference95.3″100.8″+5.5″+5.8%
Wheel22″22″Same
Revs per mile665628−36
SideTread
265/40R22285/45R22
Speedometer shows 60 mph63.5mph

Real speed on 285/45R22.

Ground clearance+0.88in

Change in height under the axle.

Width per side+0.39in

On the same wheel, split inboard and outboard.

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265/40R22 or 285/45R22?

Can I use 285/45R22 instead of 265/40R22?

285/45R22 is 5.8% taller than 265/40R22. 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 285/45R22 you are really doing 63.5 mph if the speedometer was set up for 265/40R22. Going the other way, 265/40R22 would make it read 56.7 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.88 in (+22 mm) under the axle.

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