Tire Size Box

325/25R22 vs 325/35R22

325/35R22 compared with 325/25R22

+9.0% diameter, 0.0" width

325/35R22 is 30.96" tall vs 28.40". More than the 3% rule of thumb, so check carefully before switching.

28.4"22" rim3.2"12.8" wide
325/25R22 (solid) compared with 325/35R22 (dashed outline), drawn to scale

With 325/35R22 tires, when your speedometer says 60 mph you are really going

65.4 mph

325/35R22 is +2.56 inches (+9.0%) in overall diameter. That is more than the 3% most shops and makers recommend.

325/25R22325/35R22Difference%
Overall diameter28.40"30.96"+2.56"+9.0%
Section width12.80"12.80"0.00"0.0%
Sidewall height3.20"4.48"+1.28"+40.0%
Circumference89.21"97.25"+8.04"+9.0%
Revolutions per mile710.2651.5−58.7−8.3%

Speedometer difference

If your vehicle came with 325/25R22 and you fit 325/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.8 mph+1.8 mph
30 mph32.7 mph+2.7 mph
40 mph43.6 mph+3.6 mph
50 mph54.5 mph+4.5 mph
60 mph65.4 mph+5.4 mph
65 mph70.9 mph+5.9 mph
70 mph76.3 mph+6.3 mph
75 mph81.8 mph+6.8 mph
80 mph87.2 mph+7.2 mph

Each size on its own

Questions

Which is bigger, 325/25R22 or 325/35R22?
325/35R22 is taller by 2.56 inches (30.96" vs 28.40"). 325/25R22 is the same width.
Can I replace 325/25R22 with 325/35R22?
It is not recommended without checking carefully. The diameter difference is +9.0%, more than the 3% most shops and makers allow. It will throw off the speedometer and may affect ABS, stability control and clearance.
How much will 325/35R22 change my speedometer?
When your speedometer reads 60 mph with 325/35R22 fitted (calibrated for 325/25R22), your real speed is 65.4 mph. Your odometer will under-count miles by about 9.0%.
Will 325/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +1.28 inches of ground clearance at the axle.

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