SidewallerTire & wheel calculators

185/60R13 vs 155/80R13

155/80R13 is 4.7% taller (+1.02 in) and 1.18 in narrower than 185/60R13.

Caution
Check before you buy

155/80R13 is 4.7% taller than 185/60R13. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock.

185/60R13155/80R13Change
Diameter21.74″22.76″+1.02″+4.7%
Width7.28″6.10″−1.18″−16.2%
Sidewall4.37″4.88″+0.51″+11.7%
Circumference68.3″71.5″+3.2″+4.7%
Wheel13″13″Same
Revs per mile928886−42
SideTread
185/60R13155/80R13
Speedometer shows 60 mph62.8mph

Real speed on 155/80R13.

Ground clearance+0.51in

Change in height under the axle.

Width per side−0.59in

On the same wheel, split inboard and outboard.

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185/60R13 or 155/80R13?

Can I use 155/80R13 instead of 185/60R13?

155/80R13 is 4.7% taller than 185/60R13. 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 155/80R13 you are really doing 62.8 mph if the speedometer was set up for 185/60R13. Going the other way, 185/60R13 would make it read 57.3 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.51 in (+13 mm) under the axle.

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