295/60R20 vs 325/45R22

325/45R22 is 0.42 in (10.7 mm) shorter than 295/60R20, a −1.24% diameter difference. With the speedometer set for 295/60R20, an indicated 60 mph is 59.3 mph on 325/45R22.

Is this a safe swap?

Diameter difference −1.24%: within the ±3% guideline

By overall diameter alone, 325/45R22 falls inside the ±3% range commonly used as a guideline when replacing 295/60R20. 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.

295/60R20 vs 325/45R22 differences
Measurement	295/60R20	325/45R22	Difference	% diff
Overall diameter	33.94 in (862.0 mm)	33.52 in (851.3 mm)	−0.42 in (−10.7 mm)	−1.24%
Sidewall height	6.97 in (177.0 mm)	5.76 in (146.3 mm)	−1.21 in (−30.7 mm)	−17.37%
Section width	11.61 in (295.0 mm)	12.80 in (325.0 mm)	+1.18 in (+30.0 mm)	+10.17%
Circumference	106.62 in (2,708.1 mm)	105.29 in (2,674.4 mm)	−1.32 in (−33.6 mm)	−1.24%
Revolutions per mile	594	602	+7	+1.26%

True speed with the speedometer calibrated for 295/60R20
Indicated	Actual on 295/60R20	Actual on 325/45R22	Difference
30 mph	30.0 mph	29.6 mph	−0.4 mph
60 mph	60.0 mph	59.3 mph	−0.7 mph
75 mph	75.0 mph	74.1 mph	−0.9 mph

Ride-height change: 325/45R22 lowers the vehicle by 0.21 in (5.4 mm) at the axle (half the −10.7 mm diameter difference).

325/45R22 is 0.42 in shorter than 295/60R20 and 30 mm wider, a 1.24% difference in overall diameter.

With the speedometer calibrated for 295/60R20, an indicated 60 mph is actually 59.3 mph on 325/45R22, and revolutions per mile change from 594 to 602.

325/45R22 mounts on a 22-inch wheel, a plus-2 fitment from the 20-inch wheel of 295/60R20.

Size pages

Other comparisons with 295/60R20

Other comparisons with 325/45R22

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