SidewallerTire & wheel calculators

225/70R16 vs 245/70R16

245/70R16 is 3.9% taller (+1.10 in) and 0.79 in wider than 225/70R16.

Caution
Check before you buy

245/70R16 is 3.9% taller than 225/70R16. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock.

225/70R16245/70R16Change
Diameter28.40″29.50″+1.10″+3.9%
Width8.86″9.65″+0.79″+8.9%
Sidewall6.20″6.75″+0.55″+8.9%
Circumference89.2″92.7″+3.5″+3.9%
Wheel16″16″Same
Revs per mile710684−27
SideTread
225/70R16245/70R16
Speedometer shows 60 mph62.3mph

Real speed on 245/70R16.

Ground clearance+0.55in

Change in height under the axle.

Width per side+0.39in

On the same wheel, split inboard and outboard.

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225/70R16 or 245/70R16?

Can I use 245/70R16 instead of 225/70R16?

245/70R16 is 3.9% taller than 225/70R16. 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 245/70R16 you are really doing 62.3 mph if the speedometer was set up for 225/70R16. Going the other way, 225/70R16 would make it read 57.8 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.55 in (+14 mm) under the axle.

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