275/30R22 vs 275/25R24

275/25R24 is 0.92 in (23.3 mm) taller than 275/30R22, a +3.22% diameter difference. With the speedometer set for 275/30R22, an indicated 60 mph is 61.9 mph on 275/25R24.

Is this a safe swap?

Diameter difference +3.22%: outside the ±3% guideline

By overall diameter alone, 275/25R24 falls outside the ±3% range commonly used as a guideline when replacing 275/30R22; speedometer and ride-height changes are larger. 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.

275/30R22 vs 275/25R24 differences
Measurement	275/30R22	275/25R24	Difference	% diff
Overall diameter	28.50 in (723.8 mm)	29.41 in (747.1 mm)	+0.92 in (+23.3 mm)	+3.22%
Sidewall height	3.25 in (82.5 mm)	2.71 in (68.8 mm)	−0.54 in (−13.7 mm)	−16.67%
Section width	10.83 in (275.0 mm)	10.83 in (275.0 mm)	0.00 in (0.0 mm)	0.00%
Circumference	89.52 in (2,273.9 mm)	92.40 in (2,347.1 mm)	+2.88 in (+73.2 mm)	+3.22%
Revolutions per mile	708	686	−22	−3.12%

True speed with the speedometer calibrated for 275/30R22
Indicated	Actual on 275/30R22	Actual on 275/25R24	Difference
30 mph	30.0 mph	31.0 mph	+1.0 mph
60 mph	60.0 mph	61.9 mph	+1.9 mph
75 mph	75.0 mph	77.4 mph	+2.4 mph

Ride-height change: 275/25R24 raises the vehicle by 0.46 in (11.6 mm) at the axle (half the +23.3 mm diameter difference).

275/25R24 is 0.92 in taller than 275/30R22 and the same width, a 3.22% difference in overall diameter.

With the speedometer calibrated for 275/30R22, an indicated 60 mph is actually 61.9 mph on 275/25R24, and revolutions per mile change from 708 to 686.

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

Size pages

Other comparisons with 275/30R22

Other comparisons with 275/25R24

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