Tire Size Box

175/60R15 vs 195/60R15

195/60R15 compared with 175/60R15

+4.1% diameter, +0.8" width

195/60R15 is 24.21" tall vs 23.27". More than the 3% rule of thumb, so check carefully before switching.

23.3"15" rim4.1"6.9" wide
175/60R15 (solid) compared with 195/60R15 (dashed outline), drawn to scale

With 195/60R15 tires, when your speedometer says 60 mph you are really going

62.4 mph

195/60R15 is +0.94 inches (+4.1%) in overall diameter. That is more than the 3% most shops and makers recommend.

175/60R15195/60R15Difference%
Overall diameter23.27"24.21"+0.94"+4.1%
Section width6.89"7.68"+0.79"+11.4%
Sidewall height4.13"4.61"+0.47"+11.4%
Circumference73.10"76.07"+2.97"+4.1%
Revolutions per mile866.8833.0−33.8−3.9%

Speedometer difference

If your vehicle came with 175/60R15 and you fit 195/60R15, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.8 mph+0.8 mph
30 mph31.2 mph+1.2 mph
40 mph41.6 mph+1.6 mph
50 mph52.0 mph+2.0 mph
60 mph62.4 mph+2.4 mph
65 mph67.6 mph+2.6 mph
70 mph72.8 mph+2.8 mph
75 mph78.0 mph+3.0 mph
80 mph83.2 mph+3.2 mph

Each size on its own

Questions

Which is bigger, 175/60R15 or 195/60R15?
195/60R15 is taller by 0.94 inches (24.21" vs 23.27"). 195/60R15 is wider by 0.79 inches.
Can I replace 175/60R15 with 195/60R15?
It is not recommended without checking carefully. The diameter difference is +4.1%, 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 195/60R15 change my speedometer?
When your speedometer reads 60 mph with 195/60R15 fitted (calibrated for 175/60R15), your real speed is 62.4 mph. Your odometer will under-count miles by about 4.1%.
Will 195/60R15 lift my vehicle?
Ride height changes by half the diameter difference: +0.47 inches of ground clearance at the axle.

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