TireSizesFinder

35x13.50R20 vs 325/50R22

325/50R22 is 0.20 in (5.2 mm) shorter than 35x13.50R20, a −0.58% diameter difference. With the speedometer set for 35x13.50R20, an indicated 60 mph is 59.6 mph on 325/50R22.

Is this a safe swap?

Diameter difference −0.58%: under 1%

By overall diameter alone, 325/50R22 is a near match for 35x13.50R20; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 35x13.50R20 (35.00 in) vs 325/50R22 (34.80 in)35x13.50R2035.00 in × 13.50 in325/50R2234.80 in × 12.80 in
Side profile and tread width, drawn to the same scale.
35x13.50R20 vs 325/50R22 differences
Measurement35x13.50R20325/50R22Difference% diff
Overall diameter35.00 in (889.0 mm)34.80 in (883.8 mm)−0.20 in (−5.2 mm)−0.58%
Sidewall height7.50 in (190.5 mm)6.40 in (162.5 mm)−1.10 in (−28.0 mm)−14.70%
Section width13.50 in (342.9 mm)12.80 in (325.0 mm)−0.70 in (−17.9 mm)−5.22%
Circumference109.96 in (2,792.9 mm)109.31 in (2,776.5 mm)−0.64 in (−16.3 mm)−0.58%
Revolutions per mile576580+3+0.59%
True speed with the speedometer calibrated for 35x13.50R20
IndicatedActual on 35x13.50R20Actual on 325/50R22Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.6 mph−0.4 mph
75 mph75.0 mph74.6 mph−0.4 mph

Ride-height change: 325/50R22 lowers the vehicle by 0.10 in (2.6 mm) at the axle (half the −5.2 mm diameter difference).

325/50R22 is 0.20 in shorter than 35x13.50R20 and 18 mm narrower, a 0.58% difference in overall diameter.

With the speedometer calibrated for 35x13.50R20, an indicated 60 mph is actually 59.6 mph on 325/50R22, and revolutions per mile change from 576 to 580.

325/50R22 mounts on a 22-inch wheel, a plus-2 fitment from the 20-inch wheel of 35x13.50R20.

Size pages

Other comparisons with 35x13.50R20

Other comparisons with 325/50R22

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