Tire Size Box

195/60R15 vs 195/70R15

195/70R15 compared with 195/60R15

+6.3% diameter, 0.0" width

195/70R15 is 25.75" tall vs 24.21". More than the 3% rule of thumb, so check carefully before switching.

24.2"15" rim4.6"7.7" wide
195/60R15 (solid) compared with 195/70R15 (dashed outline), drawn to scale

With 195/70R15 tires, when your speedometer says 60 mph you are really going

63.8 mph

195/70R15 is +1.54 inches (+6.3%) in overall diameter. That is more than the 3% most shops and makers recommend.

195/60R15195/70R15Difference%
Overall diameter24.21"25.75"+1.54"+6.3%
Section width7.68"7.68"0.00"0.0%
Sidewall height4.61"5.37"+0.77"+16.7%
Circumference76.07"80.89"+4.82"+6.3%
Revolutions per mile833.0783.3−49.7−6.0%

Speedometer difference

If your vehicle came with 195/60R15 and you fit 195/70R15, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.3 mph+1.3 mph
30 mph31.9 mph+1.9 mph
40 mph42.5 mph+2.5 mph
50 mph53.2 mph+3.2 mph
60 mph63.8 mph+3.8 mph
65 mph69.1 mph+4.1 mph
70 mph74.4 mph+4.4 mph
75 mph79.8 mph+4.8 mph
80 mph85.1 mph+5.1 mph

Each size on its own

Questions

Which is bigger, 195/60R15 or 195/70R15?
195/70R15 is taller by 1.54 inches (25.75" vs 24.21"). 195/60R15 is the same width.
Can I replace 195/60R15 with 195/70R15?
It is not recommended without checking carefully. The diameter difference is +6.3%, 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 195/70R15 change my speedometer?
When your speedometer reads 60 mph with 195/70R15 fitted (calibrated for 195/60R15), your real speed is 63.8 mph. Your odometer will under-count miles by about 6.3%.
Will 195/70R15 lift my vehicle?
Ride height changes by half the diameter difference: +0.77 inches of ground clearance at the axle.

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