225/75R17 vs 235/60R19

235/60R19 is 0.19 in (4.7 mm) shorter than 225/75R17, a −0.61% diameter difference. With the speedometer set for 225/75R17, an indicated 60 mph is 59.6 mph on 235/60R19.

Is this a safe swap?

Diameter difference −0.61%: under 1%

By overall diameter alone, 235/60R19 is a near match for 225/75R17; 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.

225/75R17 vs 235/60R19 differences
Measurement	225/75R17	235/60R19	Difference	% diff
Overall diameter	30.29 in (769.3 mm)	30.10 in (764.6 mm)	−0.19 in (−4.7 mm)	−0.61%
Sidewall height	6.64 in (168.8 mm)	5.55 in (141.0 mm)	−1.09 in (−27.7 mm)	−16.44%
Section width	8.86 in (225.0 mm)	9.25 in (235.0 mm)	+0.39 in (+10.0 mm)	+4.44%
Circumference	95.15 in (2,416.8 mm)	94.57 in (2,402.1 mm)	−0.58 in (−14.8 mm)	−0.61%
Revolutions per mile	666	670	+4	+0.61%

True speed with the speedometer calibrated for 225/75R17
Indicated	Actual on 225/75R17	Actual on 235/60R19	Difference
30 mph	30.0 mph	29.8 mph	−0.2 mph
60 mph	60.0 mph	59.6 mph	−0.4 mph
75 mph	75.0 mph	74.5 mph	−0.5 mph

Ride-height change: 235/60R19 lowers the vehicle by 0.09 in (2.4 mm) at the axle (half the −4.7 mm diameter difference).

235/60R19 is 0.19 in shorter than 225/75R17 and 10 mm wider, a 0.61% difference in overall diameter.

With the speedometer calibrated for 225/75R17, an indicated 60 mph is actually 59.6 mph on 235/60R19, and revolutions per mile change from 666 to 670.

235/60R19 mounts on a 19-inch wheel, a plus-2 fitment from the 17-inch wheel of 225/75R17.

Size pages

Other comparisons with 225/75R17

Other comparisons with 235/60R19

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