SidewallerTire & wheel calculators

185/70R14 vs 205/75R14

205/75R14 is 7.9% taller (+1.91 in) and 0.79 in wider than 185/70R14.

Large
Big change

205/75R14 is 7.9% taller than 185/70R14. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears.

185/70R14205/75R14Change
Diameter24.20″26.11″+1.91″+7.9%
Width7.28″8.07″+0.79″+10.8%
Sidewall5.10″6.05″+0.95″+18.7%
Circumference76.0″82.0″+6.0″+7.9%
Wheel14″14″Same
Revs per mile834773−61
SideTread
185/70R14205/75R14
Speedometer shows 60 mph64.7mph

Real speed on 205/75R14.

Ground clearance+0.95in

Change in height under the axle.

Width per side+0.39in

On the same wheel, split inboard and outboard.

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185/70R14 or 205/75R14?

Can I use 205/75R14 instead of 185/70R14?

205/75R14 is 7.9% taller than 185/70R14. 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 205/75R14 you are really doing 64.7 mph if the speedometer was set up for 185/70R14. Going the other way, 185/70R14 would make it read 55.6 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.95 in (+24 mm) under the axle.

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