Tire Size Box

215/60R17 vs 215/70R17

215/70R17 compared with 215/60R17

+6.2% diameter, 0.0" width

215/70R17 is 28.85" tall vs 27.16". More than the 3% rule of thumb, so check carefully before switching.

27.2"17" rim5.1"8.5" wide
215/60R17 (solid) compared with 215/70R17 (dashed outline), drawn to scale

With 215/70R17 tires, when your speedometer says 60 mph you are really going

63.7 mph

215/70R17 is +1.69 inches (+6.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

215/60R17215/70R17Difference%
Overall diameter27.16"28.85"+1.69"+6.2%
Section width8.46"8.46"0.00"0.0%
Sidewall height5.08"5.93"+0.85"+16.7%
Circumference85.32"90.64"+5.32"+6.2%
Revolutions per mile742.6699.1−43.6−5.9%

Speedometer difference

If your vehicle came with 215/60R17 and you fit 215/70R17, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.2 mph+1.2 mph
30 mph31.9 mph+1.9 mph
40 mph42.5 mph+2.5 mph
50 mph53.1 mph+3.1 mph
60 mph63.7 mph+3.7 mph
65 mph69.1 mph+4.1 mph
70 mph74.4 mph+4.4 mph
75 mph79.7 mph+4.7 mph
80 mph85.0 mph+5.0 mph

Each size on its own

Questions

Which is bigger, 215/60R17 or 215/70R17?
215/70R17 is taller by 1.69 inches (28.85" vs 27.16"). 215/60R17 is the same width.
Can I replace 215/60R17 with 215/70R17?
It is not recommended without checking carefully. The diameter difference is +6.2%, 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 215/70R17 change my speedometer?
When your speedometer reads 60 mph with 215/70R17 fitted (calibrated for 215/60R17), your real speed is 63.7 mph. Your odometer will under-count miles by about 6.2%.
Will 215/70R17 lift my vehicle?
Ride height changes by half the diameter difference: +0.85 inches of ground clearance at the axle.

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