Tire Size Box

355/25R24 vs 355/35R24

355/35R24 compared with 355/25R24

+9.0% diameter, 0.0" width

355/35R24 is 33.78" tall vs 30.99". More than the 3% rule of thumb, so check carefully before switching.

31.0"24" rim3.5"14.0" wide
355/25R24 (solid) compared with 355/35R24 (dashed outline), drawn to scale

With 355/35R24 tires, when your speedometer says 60 mph you are really going

65.4 mph

355/35R24 is +2.80 inches (+9.0%) in overall diameter. That is more than the 3% most shops and makers recommend.

355/25R24355/35R24Difference%
Overall diameter30.99"33.78"+2.80"+9.0%
Section width13.98"13.98"0.00"0.0%
Sidewall height3.49"4.89"+1.40"+40.0%
Circumference97.35"106.13"+8.78"+9.0%
Revolutions per mile650.8597.0−53.9−8.3%

Speedometer difference

If your vehicle came with 355/25R24 and you fit 355/35R24, 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, 355/25R24 or 355/35R24?
355/35R24 is taller by 2.80 inches (33.78" vs 30.99"). 355/25R24 is the same width.
Can I replace 355/25R24 with 355/35R24?
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 355/35R24 change my speedometer?
When your speedometer reads 60 mph with 355/35R24 fitted (calibrated for 355/25R24), your real speed is 65.4 mph. Your odometer will under-count miles by about 9.0%.
Will 355/35R24 lift my vehicle?
Ride height changes by half the diameter difference: +1.40 inches of ground clearance at the axle.

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