SidewallerTire & wheel calculators

195/50R15 vs 175/65R15

175/65R15 is 5.6% taller (+1.28 in) and 0.79 in narrower than 195/50R15.

Large
Big change

175/65R15 is 5.6% taller than 195/50R15. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears.

195/50R15175/65R15Change
Diameter22.68″23.96″+1.28″+5.6%
Width7.68″6.89″−0.79″−10.3%
Sidewall3.84″4.48″+0.64″+16.7%
Circumference71.2″75.3″+4.0″+5.6%
Wheel15″15″Same
Revs per mile889842−48
SideTread
195/50R15175/65R15
Speedometer shows 60 mph63.4mph

Real speed on 175/65R15.

Ground clearance+0.64in

Change in height under the axle.

Width per side−0.39in

On the same wheel, split inboard and outboard.

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195/50R15 or 175/65R15?

Can I use 175/65R15 instead of 195/50R15?

175/65R15 is 5.6% taller than 195/50R15. 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 175/65R15 you are really doing 63.4 mph if the speedometer was set up for 195/50R15. Going the other way, 195/50R15 would make it read 56.8 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.64 in (+16 mm) under the axle.

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