225/75R15 vs 225/60R17

225/60R17 is 0.66 in (16.7 mm) shorter than 225/75R15, a −2.32% diameter difference. With the speedometer set for 225/75R15, an indicated 60 mph is 58.6 mph on 225/60R17.

Is this a safe swap?

Diameter difference −2.32%: within the ±3% guideline

By overall diameter alone, 225/60R17 falls inside the ±3% range commonly used as a guideline when replacing 225/75R15. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

Side profile and tread width, drawn to the same scale.

225/75R15 vs 225/60R17 differences
Measurement	225/75R15	225/60R17	Difference	% diff
Overall diameter	28.29 in (718.5 mm)	27.63 in (701.8 mm)	−0.66 in (−16.7 mm)	−2.32%
Sidewall height	6.64 in (168.8 mm)	5.31 in (135.0 mm)	−1.33 in (−33.7 mm)	−20.00%
Section width	8.86 in (225.0 mm)	8.86 in (225.0 mm)	0.00 in (0.0 mm)	0.00%
Circumference	88.87 in (2,257.2 mm)	86.80 in (2,204.8 mm)	−2.07 in (−52.5 mm)	−2.32%
Revolutions per mile	713	730	+17	+2.38%

True speed with the speedometer calibrated for 225/75R15
Indicated	Actual on 225/75R15	Actual on 225/60R17	Difference
30 mph	30.0 mph	29.3 mph	−0.7 mph
60 mph	60.0 mph	58.6 mph	−1.4 mph
75 mph	75.0 mph	73.3 mph	−1.7 mph

Ride-height change: 225/60R17 lowers the vehicle by 0.33 in (8.4 mm) at the axle (half the −16.7 mm diameter difference).

225/60R17 is 0.66 in shorter than 225/75R15 and the same width, a 2.32% difference in overall diameter.

With the speedometer calibrated for 225/75R15, an indicated 60 mph is actually 58.6 mph on 225/60R17, and revolutions per mile change from 713 to 730.

225/60R17 mounts on a 17-inch wheel, a plus-2 fitment from the 15-inch wheel of 225/75R15.

Size pages

Other comparisons with 225/75R15

Other comparisons with 225/60R17

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.