Tire Size Box

175/55R16 vs 195/55R16

195/55R16 compared with 175/55R16

+3.7% diameter, +0.8" width

195/55R16 is 24.44" tall vs 23.58". More than the 3% rule of thumb, so check carefully before switching.

23.6"16" rim3.8"6.9" wide
175/55R16 (solid) compared with 195/55R16 (dashed outline), drawn to scale

With 195/55R16 tires, when your speedometer says 60 mph you are really going

62.2 mph

195/55R16 is +0.87 inches (+3.7%) in overall diameter. That is more than the 3% most shops and makers recommend.

175/55R16195/55R16Difference%
Overall diameter23.58"24.44"+0.87"+3.7%
Section width6.89"7.68"+0.79"+11.4%
Sidewall height3.79"4.22"+0.43"+11.4%
Circumference74.07"76.80"+2.72"+3.7%
Revolutions per mile855.4825.0−30.3−3.5%

Speedometer difference

If your vehicle came with 175/55R16 and you fit 195/55R16, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.1 mph+1.1 mph
40 mph41.5 mph+1.5 mph
50 mph51.8 mph+1.8 mph
60 mph62.2 mph+2.2 mph
65 mph67.4 mph+2.4 mph
70 mph72.6 mph+2.6 mph
75 mph77.8 mph+2.8 mph
80 mph82.9 mph+2.9 mph

Each size on its own

Questions

Which is bigger, 175/55R16 or 195/55R16?
195/55R16 is taller by 0.87 inches (24.44" vs 23.58"). 195/55R16 is wider by 0.79 inches.
Can I replace 175/55R16 with 195/55R16?
It is not recommended without checking carefully. The diameter difference is +3.7%, more than the 3% most shops and makers allow. It will throw off the speedometer and may affect ABS, stability control and clearance.
How much will 195/55R16 change my speedometer?
When your speedometer reads 60 mph with 195/55R16 fitted (calibrated for 175/55R16), your real speed is 62.2 mph. Your odometer will under-count miles by about 3.7%.
Will 195/55R16 lift my vehicle?
Ride height changes by half the diameter difference: +0.43 inches of ground clearance at the axle.

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