TireSizesFinder

225/70R15 vs 215/60R17

215/60R17 is 0.24 in (6.2 mm) shorter than 225/70R15, a −0.89% diameter difference. With the speedometer set for 225/70R15, an indicated 60 mph is 59.5 mph on 215/60R17.

Is this a safe swap?

Diameter difference −0.89%: under 1%

By overall diameter alone, 215/60R17 is a near match for 225/70R15; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 225/70R15 (27.40 in) vs 215/60R17 (27.16 in)225/70R1527.40 in × 8.86 in215/60R1727.16 in × 8.46 in
Side profile and tread width, drawn to the same scale.
225/70R15 vs 215/60R17 differences
Measurement225/70R15215/60R17Difference% diff
Overall diameter27.40 in (696.0 mm)27.16 in (689.8 mm)−0.24 in (−6.2 mm)−0.89%
Sidewall height6.20 in (157.5 mm)5.08 in (129.0 mm)−1.12 in (−28.5 mm)−18.10%
Section width8.86 in (225.0 mm)8.46 in (215.0 mm)−0.39 in (−10.0 mm)−4.44%
Circumference86.08 in (2,186.5 mm)85.32 in (2,167.1 mm)−0.77 in (−19.5 mm)−0.89%
Revolutions per mile736743+7+0.90%
True speed with the speedometer calibrated for 225/70R15
IndicatedActual on 225/70R15Actual on 215/60R17Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.5 mph−0.5 mph
75 mph75.0 mph74.3 mph−0.7 mph

Ride-height change: 215/60R17 lowers the vehicle by 0.12 in (3.1 mm) at the axle (half the −6.2 mm diameter difference).

215/60R17 is 0.24 in shorter than 225/70R15 and 10 mm narrower, a 0.89% difference in overall diameter.

With the speedometer calibrated for 225/70R15, an indicated 60 mph is actually 59.5 mph on 215/60R17, and revolutions per mile change from 736 to 743.

215/60R17 mounts on a 17-inch wheel, a plus-2 fitment from the 15-inch wheel of 225/70R15.

Size pages

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Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.