245/35R22 vs 275/25R24

275/25R24 is 0.66 in (16.8 mm) taller than 245/35R22, a +2.30% diameter difference. With the speedometer set for 245/35R22, an indicated 60 mph is 61.4 mph on 275/25R24.

Is this a safe swap?

Diameter difference +2.30%: within the ±3% guideline

By overall diameter alone, 275/25R24 falls inside the ±3% range commonly used as a guideline when replacing 245/35R22. 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.

245/35R22 vs 275/25R24 differences
Measurement	245/35R22	275/25R24	Difference	% diff
Overall diameter	28.75 in (730.3 mm)	29.41 in (747.1 mm)	+0.66 in (+16.8 mm)	+2.30%
Sidewall height	3.38 in (85.8 mm)	2.71 in (68.8 mm)	−0.67 in (−17.0 mm)	−19.83%
Section width	9.65 in (245.0 mm)	10.83 in (275.0 mm)	+1.18 in (+30.0 mm)	+12.24%
Circumference	90.33 in (2,294.3 mm)	92.40 in (2,347.1 mm)	+2.08 in (+52.8 mm)	+2.30%
Revolutions per mile	701	686	−16	−2.25%

True speed with the speedometer calibrated for 245/35R22
Indicated	Actual on 245/35R22	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	76.7 mph	+1.7 mph

Ride-height change: 275/25R24 raises the vehicle by 0.33 in (8.4 mm) at the axle (half the +16.8 mm diameter difference).

275/25R24 is 0.66 in taller than 245/35R22 and 30 mm wider, a 2.30% difference in overall diameter.

With the speedometer calibrated for 245/35R22, an indicated 60 mph is actually 61.4 mph on 275/25R24, and revolutions per mile change from 701 to 686.

275/25R24 mounts on a 24-inch wheel, a plus-2 fitment from the 22-inch wheel of 245/35R22.

Size pages

Other comparisons with 245/35R22

Other comparisons with 275/25R24

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