SidewallerTire & wheel calculators

185/70R13 vs 185/65R14

185/65R14 is 1.2% taller (+0.27 in) and the same width than 185/70R13.

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185/65R14 is 1.2% taller than 185/70R13. That is inside the ±3% most shops treat as a straight swap.

185/70R13185/65R14Change
Diameter23.20″23.47″+0.27″+1.2%
Width7.28″7.28″0.00″0.0%
Sidewall5.10″4.73″−0.36″−7.1%
Circumference72.9″73.7″+0.9″+1.2%
Wheel13″14″+1″
Revs per mile869859−10
SideTread
185/70R13185/65R14
Speedometer shows 60 mph60.7mph

Real speed on 185/65R14.

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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185/70R13 or 185/65R14?

Can I use 185/65R14 instead of 185/70R13?

185/65R14 is 1.2% taller than 185/70R13. 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 185/65R14 you are really doing 60.7 mph if the speedometer was set up for 185/70R13. Going the other way, 185/70R13 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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