285/30R22 vs 275/25R24

275/25R24 is 0.68 in (17.3 mm) taller than 285/30R22, a +2.37% diameter difference. With the speedometer set for 285/30R22, an indicated 60 mph is 61.4 mph on 275/25R24.

Is this a safe swap?

Diameter difference +2.37%: within the ±3% guideline

By overall diameter alone, 275/25R24 falls inside the ±3% range commonly used as a guideline when replacing 285/30R22. 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.

285/30R22 vs 275/25R24 differences
Measurement	285/30R22	275/25R24	Difference	% diff
Overall diameter	28.73 in (729.8 mm)	29.41 in (747.1 mm)	+0.68 in (+17.3 mm)	+2.37%
Sidewall height	3.37 in (85.5 mm)	2.71 in (68.8 mm)	−0.66 in (−16.7 mm)	−19.59%
Section width	11.22 in (285.0 mm)	10.83 in (275.0 mm)	−0.39 in (−10.0 mm)	−3.51%
Circumference	90.27 in (2,292.7 mm)	92.40 in (2,347.1 mm)	+2.14 in (+54.3 mm)	+2.37%
Revolutions per mile	702	686	−16	−2.32%

True speed with the speedometer calibrated for 285/30R22
Indicated	Actual on 285/30R22	Actual on 275/25R24	Difference
30 mph	30.0 mph	30.7 mph	+0.7 mph
60 mph	60.0 mph	61.4 mph	+1.4 mph
75 mph	75.0 mph	76.8 mph	+1.8 mph

Ride-height change: 275/25R24 raises the vehicle by 0.34 in (8.6 mm) at the axle (half the +17.3 mm diameter difference).

275/25R24 is 0.68 in taller than 285/30R22 and 10 mm narrower, a 2.37% difference in overall diameter.

With the speedometer calibrated for 285/30R22, an indicated 60 mph is actually 61.4 mph on 275/25R24, and revolutions per mile change from 702 to 686.

275/25R24 mounts on a 24-inch wheel, a plus-2 fitment from the 22-inch wheel of 285/30R22.

Size pages

Other comparisons with 285/30R22

Other comparisons with 275/25R24

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