285/35R22 vs 275/25R24

275/25R24 is 0.44 in (11.2 mm) shorter than 285/35R22, a −1.48% diameter difference. With the speedometer set for 285/35R22, an indicated 60 mph is 59.1 mph on 275/25R24.

Is this a safe swap?

Diameter difference −1.48%: within the ±3% guideline

By overall diameter alone, 275/25R24 falls inside the ±3% range commonly used as a guideline when replacing 285/35R22. 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.

285/35R22 vs 275/25R24 differences
Measurement	285/35R22	275/25R24	Difference	% diff
Overall diameter	29.85 in (758.3 mm)	29.41 in (747.1 mm)	−0.44 in (−11.2 mm)	−1.48%
Sidewall height	3.93 in (99.8 mm)	2.71 in (68.8 mm)	−1.22 in (−31.0 mm)	−31.08%
Section width	11.22 in (285.0 mm)	10.83 in (275.0 mm)	−0.39 in (−10.0 mm)	−3.51%
Circumference	93.79 in (2,382.3 mm)	92.40 in (2,347.1 mm)	−1.39 in (−35.2 mm)	−1.48%
Revolutions per mile	676	686	+10	+1.50%

True speed with the speedometer calibrated for 285/35R22
Indicated	Actual on 285/35R22	Actual on 275/25R24	Difference
30 mph	30.0 mph	29.6 mph	−0.4 mph
60 mph	60.0 mph	59.1 mph	−0.9 mph
75 mph	75.0 mph	73.9 mph	−1.1 mph

Ride-height change: 275/25R24 lowers the vehicle by 0.22 in (5.6 mm) at the axle (half the −11.2 mm diameter difference).

275/25R24 is 0.44 in shorter than 285/35R22 and 10 mm narrower, a 1.48% difference in overall diameter.

With the speedometer calibrated for 285/35R22, an indicated 60 mph is actually 59.1 mph on 275/25R24, and revolutions per mile change from 676 to 686.

275/25R24 mounts on a 24-inch wheel, a plus-2 fitment from the 22-inch wheel of 285/35R22.

Size pages

Other comparisons with 285/35R22

Other comparisons with 275/25R24

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