SidewallerTire & wheel calculators

195/50R16 vs 185/60R15

185/60R15 is 0.3% taller (+0.06 in) and 0.39 in narrower than 195/50R16.

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Close match

185/60R15 is 0.3% taller than 195/50R16. That is inside the ±3% most shops treat as a straight swap.

195/50R16185/60R15Change
Diameter23.68″23.74″+0.06″+0.3%
Width7.68″7.28″−0.39″−5.1%
Sidewall3.84″4.37″+0.53″+13.8%
Circumference74.4″74.6″+0.2″+0.3%
Wheel16″15″−1″
Revs per mile852850−2
SideTread
195/50R16185/60R15
Speedometer shows 60 mph60.2mph

Real speed on 185/60R15.

Ground clearance+0.03in

Change in height under the axle.

Width per side−0.20in

On the same wheel, split inboard and outboard.

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195/50R16 or 185/60R15?

Can I use 185/60R15 instead of 195/50R16?

185/60R15 is 0.3% taller than 195/50R16. 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 60.2 mph if the speedometer was set up for 195/50R16. Going the other way, 195/50R16 would make it read 59.8 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.03 in (+1 mm) under the axle.

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