TireSizesFinder

325/60R20 vs 35x12.50R22

35x12.50R22 is 0.35 in (9.0 mm) shorter than 325/60R20, a −1.00% diameter difference. With the speedometer set for 325/60R20, an indicated 60 mph is 59.4 mph on 35x12.50R22.

Is this a safe swap?

Diameter difference −1.00%: within the ±3% guideline

By overall diameter alone, 35x12.50R22 falls inside the ±3% range commonly used as a guideline when replacing 325/60R20. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 325/60R20 (35.35 in) vs 35x12.50R22 (35.00 in)325/60R2035.35 in × 12.80 in35x12.50R2235.00 in × 12.50 in
Side profile and tread width, drawn to the same scale.
325/60R20 vs 35x12.50R22 differences
Measurement325/60R2035x12.50R22Difference% diff
Overall diameter35.35 in (898.0 mm)35.00 in (889.0 mm)−0.35 in (−9.0 mm)−1.00%
Sidewall height7.68 in (195.0 mm)6.50 in (165.1 mm)−1.18 in (−29.9 mm)−15.33%
Section width12.80 in (325.0 mm)12.50 in (317.5 mm)−0.30 in (−7.5 mm)−2.31%
Circumference111.07 in (2,821.2 mm)109.96 in (2,792.9 mm)−1.11 in (−28.3 mm)−1.00%
Revolutions per mile570576+6+1.01%
True speed with the speedometer calibrated for 325/60R20
IndicatedActual on 325/60R20Actual on 35x12.50R22Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.4 mph−0.6 mph
75 mph75.0 mph74.2 mph−0.8 mph

Ride-height change: 35x12.50R22 lowers the vehicle by 0.18 in (4.5 mm) at the axle (half the −9.0 mm diameter difference).

35x12.50R22 is 0.35 in shorter than 325/60R20 and 8 mm narrower, a 1.00% difference in overall diameter.

With the speedometer calibrated for 325/60R20, an indicated 60 mph is actually 59.4 mph on 35x12.50R22, and revolutions per mile change from 570 to 576.

35x12.50R22 mounts on a 22-inch wheel, a plus-2 fitment from the 20-inch wheel of 325/60R20.

Size pages

Other comparisons with 325/60R20

Other comparisons with 35x12.50R22

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.