275/60R20 vs 295/60R20

295/60R20 is 0.94 in (24.0 mm) taller than 275/60R20, a +2.86% diameter difference. With the speedometer set for 275/60R20, an indicated 60 mph is 61.7 mph on 295/60R20.

Is this a safe swap?

Diameter difference +2.86%: within the ±3% guideline

By overall diameter alone, 295/60R20 falls inside the ±3% range commonly used as a guideline when replacing 275/60R20. 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.

275/60R20 vs 295/60R20 differences
Measurement	275/60R20	295/60R20	Difference	% diff
Overall diameter	32.99 in (838.0 mm)	33.94 in (862.0 mm)	+0.94 in (+24.0 mm)	+2.86%
Sidewall height	6.50 in (165.0 mm)	6.97 in (177.0 mm)	+0.47 in (+12.0 mm)	+7.27%
Section width	10.83 in (275.0 mm)	11.61 in (295.0 mm)	+0.79 in (+20.0 mm)	+7.27%
Circumference	103.65 in (2,632.7 mm)	106.62 in (2,708.1 mm)	+2.97 in (+75.4 mm)	+2.86%
Revolutions per mile	611	594	−17	−2.78%

True speed with the speedometer calibrated for 275/60R20
Indicated	Actual on 275/60R20	Actual on 295/60R20	Difference
30 mph	30.0 mph	30.9 mph	+0.9 mph
60 mph	60.0 mph	61.7 mph	+1.7 mph
75 mph	75.0 mph	77.1 mph	+2.1 mph

Ride-height change: 295/60R20 raises the vehicle by 0.47 in (12.0 mm) at the axle (half the +24.0 mm diameter difference).

295/60R20 is 0.94 in taller than 275/60R20 and 20 mm wider, a 2.86% difference in overall diameter.

With the speedometer calibrated for 275/60R20, an indicated 60 mph is actually 61.7 mph on 295/60R20, and revolutions per mile change from 611 to 594.

Both sizes mount on 20-inch wheels.

Size pages

Other comparisons with 275/60R20

Other comparisons with 295/60R20

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