Tire Size Box

325/25R24 vs 325/35R24

325/35R24 compared with 325/25R24

+8.4% diameter, 0.0" width

325/35R24 is 32.96" tall vs 30.40". More than the 3% rule of thumb, so check carefully before switching.

30.4"24" rim3.2"12.8" wide
325/25R24 (solid) compared with 325/35R24 (dashed outline), drawn to scale

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

65.1 mph

325/35R24 is +2.56 inches (+8.4%) in overall diameter. That is more than the 3% most shops and makers recommend.

325/25R24325/35R24Difference%
Overall diameter30.40"32.96"+2.56"+8.4%
Section width12.80"12.80"0.00"0.0%
Sidewall height3.20"4.48"+1.28"+40.0%
Circumference95.50"103.54"+8.04"+8.4%
Revolutions per mile663.5612.0−51.5−7.8%

Speedometer difference

If your vehicle came with 325/25R24 and you fit 325/35R24, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.7 mph+1.7 mph
30 mph32.5 mph+2.5 mph
40 mph43.4 mph+3.4 mph
50 mph54.2 mph+4.2 mph
60 mph65.1 mph+5.1 mph
65 mph70.5 mph+5.5 mph
70 mph75.9 mph+5.9 mph
75 mph81.3 mph+6.3 mph
80 mph86.7 mph+6.7 mph

Each size on its own

Questions

Which is bigger, 325/25R24 or 325/35R24?
325/35R24 is taller by 2.56 inches (32.96" vs 30.40"). 325/25R24 is the same width.
Can I replace 325/25R24 with 325/35R24?
It is not recommended without checking carefully. The diameter difference is +8.4%, 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 325/25R24), your real speed is 65.1 mph. Your odometer will under-count miles by about 8.4%.
Will 325/35R24 lift my vehicle?
Ride height changes by half the diameter difference: +1.28 inches of ground clearance at the axle.

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