SidewallerTire & wheel calculators

185/65R14 vs 185/60R15

185/60R15 is 1.2% taller (+0.27 in) and the same width than 185/65R14.

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185/60R15 is 1.2% taller than 185/65R14. That is inside the ±3% most shops treat as a straight swap.

185/65R14185/60R15Change
Diameter23.47″23.74″+0.27″+1.2%
Width7.28″7.28″0.00″0.0%
Sidewall4.73″4.37″−0.36″−7.7%
Circumference73.7″74.6″+0.9″+1.2%
Wheel14″15″+1″
Revs per mile859850−10
SideTread
185/65R14185/60R15
Speedometer shows 60 mph60.7mph

Real speed on 185/60R15.

Ground clearance+0.14in

Change in height under the axle.

Width per side0.00in

On the same wheel, split inboard and outboard.

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185/65R14 or 185/60R15?

Can I use 185/60R15 instead of 185/65R14?

185/60R15 is 1.2% taller than 185/65R14. That is inside the ±3% most shops treat as a straight swap. 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 185/60R15 you are really doing 60.7 mph if the speedometer was set up for 185/65R14. Going the other way, 185/65R14 would make it read 59.3 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.14 in (+3 mm) under the axle.

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