225/60R17 vs 235/60R17

235/60R17 is 0.47 in (12.0 mm) taller than 225/60R17, a +1.71% diameter difference. With the speedometer set for 225/60R17, an indicated 60 mph is 61.0 mph on 235/60R17.

Is this a safe swap?

Diameter difference +1.71%: within the ±3% guideline

By overall diameter alone, 235/60R17 falls inside the ±3% range commonly used as a guideline when replacing 225/60R17. 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.

225/60R17 vs 235/60R17 differences
Measurement	225/60R17	235/60R17	Difference	% diff
Overall diameter	27.63 in (701.8 mm)	28.10 in (713.8 mm)	+0.47 in (+12.0 mm)	+1.71%
Sidewall height	5.31 in (135.0 mm)	5.55 in (141.0 mm)	+0.24 in (+6.0 mm)	+4.44%
Section width	8.86 in (225.0 mm)	9.25 in (235.0 mm)	+0.39 in (+10.0 mm)	+4.44%
Circumference	86.80 in (2,204.8 mm)	88.29 in (2,242.5 mm)	+1.48 in (+37.7 mm)	+1.71%
Revolutions per mile	730	718	−12	−1.68%

True speed with the speedometer calibrated for 225/60R17
Indicated	Actual on 225/60R17	Actual on 235/60R17	Difference
30 mph	30.0 mph	30.5 mph	+0.5 mph
60 mph	60.0 mph	61.0 mph	+1.0 mph
75 mph	75.0 mph	76.3 mph	+1.3 mph

Ride-height change: 235/60R17 raises the vehicle by 0.24 in (6.0 mm) at the axle (half the +12.0 mm diameter difference).

235/60R17 is 0.47 in taller than 225/60R17 and 10 mm wider, a 1.71% difference in overall diameter.

With the speedometer calibrated for 225/60R17, an indicated 60 mph is actually 61.0 mph on 235/60R17, and revolutions per mile change from 730 to 718.

Both sizes mount on 17-inch wheels.

Size pages

Other comparisons with 225/60R17

Other comparisons with 235/60R17

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