Tire Size Box

195/65R17 vs 195/75R17

195/75R17 compared with 195/65R17

+5.7% diameter, 0.0" width

195/75R17 is 28.52" tall vs 26.98". More than the 3% rule of thumb, so check carefully before switching.

27.0"17" rim5.0"7.7" wide
195/65R17 (solid) compared with 195/75R17 (dashed outline), drawn to scale

With 195/75R17 tires, when your speedometer says 60 mph you are really going

63.4 mph

195/75R17 is +1.54 inches (+5.7%) in overall diameter. That is more than the 3% most shops and makers recommend.

195/65R17195/75R17Difference%
Overall diameter26.98"28.52"+1.54"+5.7%
Section width7.68"7.68"0.00"0.0%
Sidewall height4.99"5.76"+0.77"+15.4%
Circumference84.76"89.58"+4.82"+5.7%
Revolutions per mile747.5707.3−40.2−5.4%

Speedometer difference

If your vehicle came with 195/65R17 and you fit 195/75R17, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.1 mph+1.1 mph
30 mph31.7 mph+1.7 mph
40 mph42.3 mph+2.3 mph
50 mph52.8 mph+2.8 mph
60 mph63.4 mph+3.4 mph
65 mph68.7 mph+3.7 mph
70 mph74.0 mph+4.0 mph
75 mph79.3 mph+4.3 mph
80 mph84.6 mph+4.6 mph

Each size on its own

Questions

Which is bigger, 195/65R17 or 195/75R17?
195/75R17 is taller by 1.54 inches (28.52" vs 26.98"). 195/65R17 is the same width.
Can I replace 195/65R17 with 195/75R17?
It is not recommended without checking carefully. The diameter difference is +5.7%, 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 195/75R17 change my speedometer?
When your speedometer reads 60 mph with 195/75R17 fitted (calibrated for 195/65R17), your real speed is 63.4 mph. Your odometer will under-count miles by about 5.7%.
Will 195/75R17 lift my vehicle?
Ride height changes by half the diameter difference: +0.77 inches of ground clearance at the axle.

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