225/70R16 vs 235/60R17

235/60R17 is 0.30 in (7.6 mm) shorter than 225/70R16, a −1.05% diameter difference. With the speedometer set for 225/70R16, an indicated 60 mph is 59.4 mph on 235/60R17.

Is this a safe swap?

Diameter difference −1.05%: within the ±3% guideline

By overall diameter alone, 235/60R17 falls inside the ±3% range commonly used as a guideline when replacing 225/70R16. 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.

225/70R16 vs 235/60R17 differences
Measurement	225/70R16	235/60R17	Difference	% diff
Overall diameter	28.40 in (721.4 mm)	28.10 in (713.8 mm)	−0.30 in (−7.6 mm)	−1.05%
Sidewall height	6.20 in (157.5 mm)	5.55 in (141.0 mm)	−0.65 in (−16.5 mm)	−10.48%
Section width	8.86 in (225.0 mm)	9.25 in (235.0 mm)	+0.39 in (+10.0 mm)	+4.44%
Circumference	89.23 in (2,266.3 mm)	88.29 in (2,242.5 mm)	−0.94 in (−23.9 mm)	−1.05%
Revolutions per mile	710	718	+8	+1.06%

True speed with the speedometer calibrated for 225/70R16
Indicated	Actual on 225/70R16	Actual on 235/60R17	Difference
30 mph	30.0 mph	29.7 mph	−0.3 mph
60 mph	60.0 mph	59.4 mph	−0.6 mph
75 mph	75.0 mph	74.2 mph	−0.8 mph

Ride-height change: 235/60R17 lowers the vehicle by 0.15 in (3.8 mm) at the axle (half the −7.6 mm diameter difference).

235/60R17 is 0.30 in shorter than 225/70R16 and 10 mm wider, a 1.05% difference in overall diameter.

With the speedometer calibrated for 225/70R16, an indicated 60 mph is actually 59.4 mph on 235/60R17, and revolutions per mile change from 710 to 718.

235/60R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 225/70R16.

Size pages

Other comparisons with 225/70R16

Other comparisons with 235/60R17

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