Tire Size Box

335/30R24 vs 325/35R24

325/35R24 compared with 335/30R24

+3.3% diameter, −0.4" width

325/35R24 is 32.96" tall vs 31.91". More than the 3% rule of thumb, so check carefully before switching.

31.9"24" rim4.0"13.2" wide
335/30R24 (solid) compared with 325/35R24 (dashed outline), drawn to scale

With 325/35R24 tires, when your speedometer says 60 mph you are really going

62.0 mph

325/35R24 is +1.04 inches (+3.3%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/30R24325/35R24Difference%
Overall diameter31.91"32.96"+1.04"+3.3%
Section width13.19"12.80"−0.39"−3.0%
Sidewall height3.96"4.48"+0.52"+13.2%
Circumference100.26"103.54"+3.28"+3.3%
Revolutions per mile632.0612.0−20.0−3.2%

Speedometer difference

If your vehicle came with 335/30R24 and you fit 325/35R24, 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 mph41.3 mph+1.3 mph
50 mph51.6 mph+1.6 mph
60 mph62.0 mph+2.0 mph
65 mph67.1 mph+2.1 mph
70 mph72.3 mph+2.3 mph
75 mph77.5 mph+2.5 mph
80 mph82.6 mph+2.6 mph

Each size on its own

Questions

Which is bigger, 335/30R24 or 325/35R24?
325/35R24 is taller by 1.04 inches (32.96" vs 31.91"). 335/30R24 is wider by 0.39 inches.
Can I replace 335/30R24 with 325/35R24?
It is not recommended without checking carefully. The diameter difference is +3.3%, 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 325/35R24 change my speedometer?
When your speedometer reads 60 mph with 325/35R24 fitted (calibrated for 335/30R24), your real speed is 62.0 mph. Your odometer will under-count miles by about 3.3%.
Will 325/35R24 lift my vehicle?
Ride height changes by half the diameter difference: +0.52 inches of ground clearance at the axle.

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