225/65R17 vs 245/60R17

245/60R17 is 0.06 in (1.5 mm) taller than 225/65R17, a +0.21% diameter difference. With the speedometer set for 225/65R17, an indicated 60 mph is 60.1 mph on 245/60R17.

Is this a safe swap?

Diameter difference +0.21%: under 1%

By overall diameter alone, 245/60R17 is a near match for 225/65R17; the speedometer changes by less than 1%. 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.

225/65R17 vs 245/60R17 differences
Measurement	225/65R17	245/60R17	Difference	% diff
Overall diameter	28.52 in (724.3 mm)	28.57 in (725.8 mm)	+0.06 in (+1.5 mm)	+0.21%
Sidewall height	5.76 in (146.3 mm)	5.79 in (147.0 mm)	+0.03 in (+0.8 mm)	+0.51%
Section width	8.86 in (225.0 mm)	9.65 in (245.0 mm)	+0.79 in (+20.0 mm)	+8.89%
Circumference	89.58 in (2,275.5 mm)	89.77 in (2,280.2 mm)	+0.19 in (+4.7 mm)	+0.21%
Revolutions per mile	707	706	−1	−0.21%

True speed with the speedometer calibrated for 225/65R17
Indicated	Actual on 225/65R17	Actual on 245/60R17	Difference
30 mph	30.0 mph	30.1 mph	+0.1 mph
60 mph	60.0 mph	60.1 mph	+0.1 mph
75 mph	75.0 mph	75.2 mph	+0.2 mph

Ride-height change: 245/60R17 raises the vehicle by 0.03 in (0.8 mm) at the axle (half the +1.5 mm diameter difference).

245/60R17 is 0.06 in taller than 225/65R17 and 20 mm wider, a 0.21% difference in overall diameter.

With the speedometer calibrated for 225/65R17, an indicated 60 mph is actually 60.1 mph on 245/60R17, and revolutions per mile change from 707 to 706.

Both sizes mount on 17-inch wheels.

Size pages

Other comparisons with 225/65R17

Other comparisons with 245/60R17

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