Tire Size Box

335/30R22 vs 325/35R22

325/35R22 compared with 335/30R22

+3.5% diameter, −0.4" width

325/35R22 is 30.96" tall vs 29.91". More than the 3% rule of thumb, so check carefully before switching.

29.9"22" rim4.0"13.2" wide
335/30R22 (solid) compared with 325/35R22 (dashed outline), drawn to scale

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

62.1 mph

325/35R22 is +1.04 inches (+3.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/30R22325/35R22Difference%
Overall diameter29.91"30.96"+1.04"+3.5%
Section width13.19"12.80"−0.39"−3.0%
Sidewall height3.96"4.48"+0.52"+13.2%
Circumference93.98"97.25"+3.28"+3.5%
Revolutions per mile674.2651.5−22.7−3.4%

Speedometer difference

If your vehicle came with 335/30R22 and you fit 325/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.0 mph+1.0 mph
40 mph41.4 mph+1.4 mph
50 mph51.7 mph+1.7 mph
60 mph62.1 mph+2.1 mph
65 mph67.3 mph+2.3 mph
70 mph72.4 mph+2.4 mph
75 mph77.6 mph+2.6 mph
80 mph82.8 mph+2.8 mph

Each size on its own

Questions

Which is bigger, 335/30R22 or 325/35R22?
325/35R22 is taller by 1.04 inches (30.96" vs 29.91"). 335/30R22 is wider by 0.39 inches.
Can I replace 335/30R22 with 325/35R22?
It is not recommended without checking carefully. The diameter difference is +3.5%, 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 335/30R22), your real speed is 62.1 mph. Your odometer will under-count miles by about 3.5%.
Will 325/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +0.52 inches of ground clearance at the axle.

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