305/40R22 vs 295/35R24

295/35R24 is 0.52 in (13.3 mm) taller than 305/40R22, a +1.66% diameter difference. With the speedometer set for 305/40R22, an indicated 60 mph is 61.0 mph on 295/35R24.

Is this a safe swap?

Diameter difference +1.66%: within the ±3% guideline

By overall diameter alone, 295/35R24 falls inside the ±3% range commonly used as a guideline when replacing 305/40R22. 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.

305/40R22 vs 295/35R24 differences
Measurement	305/40R22	295/35R24	Difference	% diff
Overall diameter	31.61 in (802.8 mm)	32.13 in (816.1 mm)	+0.52 in (+13.3 mm)	+1.66%
Sidewall height	4.80 in (122.0 mm)	4.06 in (103.3 mm)	−0.74 in (−18.7 mm)	−15.37%
Section width	12.01 in (305.0 mm)	11.61 in (295.0 mm)	−0.39 in (−10.0 mm)	−3.28%
Circumference	99.29 in (2,522.1 mm)	100.94 in (2,563.9 mm)	+1.65 in (+41.8 mm)	+1.66%
Revolutions per mile	638	628	−10	−1.63%

True speed with the speedometer calibrated for 305/40R22
Indicated	Actual on 305/40R22	Actual on 295/35R24	Difference
30 mph	30.0 mph	30.5 mph	+0.5 mph
60 mph	60.0 mph	61.0 mph	+1.0 mph
75 mph	75.0 mph	76.2 mph	+1.2 mph

Ride-height change: 295/35R24 raises the vehicle by 0.26 in (6.6 mm) at the axle (half the +13.3 mm diameter difference).

295/35R24 is 0.52 in taller than 305/40R22 and 10 mm narrower, a 1.66% difference in overall diameter.

With the speedometer calibrated for 305/40R22, an indicated 60 mph is actually 61.0 mph on 295/35R24, and revolutions per mile change from 638 to 628.

295/35R24 mounts on a 24-inch wheel, a plus-2 fitment from the 22-inch wheel of 305/40R22.

Size pages

Other comparisons with 305/40R22

Other comparisons with 295/35R24

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