285/30R24 vs 295/35R24

295/35R24 is 1.40 in (35.5 mm) taller than 285/30R24, a +4.55% diameter difference. With the speedometer set for 285/30R24, an indicated 60 mph is 62.7 mph on 295/35R24.

Is this a safe swap?

Diameter difference +4.55%: outside the ±3% guideline

By overall diameter alone, 295/35R24 falls outside the ±3% range commonly used as a guideline when replacing 285/30R24; 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.

285/30R24 vs 295/35R24 differences
Measurement	285/30R24	295/35R24	Difference	% diff
Overall diameter	30.73 in (780.6 mm)	32.13 in (816.1 mm)	+1.40 in (+35.5 mm)	+4.55%
Sidewall height	3.37 in (85.5 mm)	4.06 in (103.3 mm)	+0.70 in (+17.8 mm)	+20.76%
Section width	11.22 in (285.0 mm)	11.61 in (295.0 mm)	+0.39 in (+10.0 mm)	+3.51%
Circumference	96.55 in (2,452.3 mm)	100.94 in (2,563.9 mm)	+4.39 in (+111.5 mm)	+4.55%
Revolutions per mile	656	628	−29	−4.35%

True speed with the speedometer calibrated for 285/30R24
Indicated	Actual on 285/30R24	Actual on 295/35R24	Difference
30 mph	30.0 mph	31.4 mph	+1.4 mph
60 mph	60.0 mph	62.7 mph	+2.7 mph
75 mph	75.0 mph	78.4 mph	+3.4 mph

Ride-height change: 295/35R24 raises the vehicle by 0.70 in (17.8 mm) at the axle (half the +35.5 mm diameter difference).

295/35R24 is 1.40 in taller than 285/30R24 and 10 mm wider, a 4.55% difference in overall diameter.

With the speedometer calibrated for 285/30R24, an indicated 60 mph is actually 62.7 mph on 295/35R24, and revolutions per mile change from 656 to 628.

Both sizes mount on 24-inch wheels.

Size pages

Other comparisons with 285/30R24

Other comparisons with 295/35R24

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