TireSizesFinder

245/55R17 vs 225/60R17

225/60R17 is 0.02 in (0.5 mm) taller than 245/55R17, a +0.07% diameter difference. With the speedometer set for 245/55R17, an indicated 60 mph is 60.0 mph on 225/60R17.

Is this a safe swap?

Diameter difference +0.07%: under 1%

By overall diameter alone, 225/60R17 is a near match for 245/55R17; 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: 245/55R17 (27.61 in) vs 225/60R17 (27.63 in)245/55R1727.61 in × 9.65 in225/60R1727.63 in × 8.86 in
Side profile and tread width, drawn to the same scale.
245/55R17 vs 225/60R17 differences
Measurement245/55R17225/60R17Difference% diff
Overall diameter27.61 in (701.3 mm)27.63 in (701.8 mm)+0.02 in (+0.5 mm)+0.07%
Sidewall height5.31 in (134.8 mm)5.31 in (135.0 mm)+0.01 in (+0.3 mm)+0.19%
Section width9.65 in (245.0 mm)8.86 in (225.0 mm)−0.79 in (−20.0 mm)−8.16%
Circumference86.74 in (2,203.2 mm)86.80 in (2,204.8 mm)+0.06 in (+1.6 mm)+0.07%
Revolutions per mile730730−1−0.07%
True speed with the speedometer calibrated for 245/55R17
IndicatedActual on 245/55R17Actual on 225/60R17Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph60.0 mph0.0 mph
75 mph75.0 mph75.1 mph+0.1 mph

Ride-height change: 225/60R17 raises the vehicle by 0.01 in (0.3 mm) at the axle (half the +0.5 mm diameter difference).

225/60R17 is 0.02 in taller than 245/55R17 and 20 mm narrower, a 0.07% difference in overall diameter.

With the speedometer calibrated for 245/55R17, an indicated 60 mph is actually 60.0 mph on 225/60R17, and revolutions per mile change from 730 to 730.

Both sizes mount on 17-inch wheels.

Size pages

Other comparisons with 245/55R17

Other comparisons with 225/60R17

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