Tire Size Box

345/30R24 vs 335/35R24

335/35R24 compared with 345/30R24

+3.4% diameter, −0.4" width

335/35R24 is 33.23" tall vs 32.15". More than the 3% rule of thumb, so check carefully before switching.

32.1"24" rim4.1"13.6" wide
345/30R24 (solid) compared with 335/35R24 (dashed outline), drawn to scale

With 335/35R24 tires, when your speedometer says 60 mph you are really going

62.0 mph

335/35R24 is +1.08 inches (+3.4%) in overall diameter. That is more than the 3% most shops and makers recommend.

345/30R24335/35R24Difference%
Overall diameter32.15"33.23"+1.08"+3.4%
Section width13.58"13.19"−0.39"−2.9%
Sidewall height4.07"4.62"+0.54"+13.3%
Circumference101.00"104.40"+3.40"+3.4%
Revolutions per mile627.3606.9−20.4−3.3%

Speedometer difference

If your vehicle came with 345/30R24 and you fit 335/35R24, 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 mph51.7 mph+1.7 mph
60 mph62.0 mph+2.0 mph
65 mph67.2 mph+2.2 mph
70 mph72.4 mph+2.4 mph
75 mph77.5 mph+2.5 mph
80 mph82.7 mph+2.7 mph

Each size on its own

Questions

Which is bigger, 345/30R24 or 335/35R24?
335/35R24 is taller by 1.08 inches (33.23" vs 32.15"). 345/30R24 is wider by 0.39 inches.
Can I replace 345/30R24 with 335/35R24?
It is not recommended without checking carefully. The diameter difference is +3.4%, 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 335/35R24 change my speedometer?
When your speedometer reads 60 mph with 335/35R24 fitted (calibrated for 345/30R24), your real speed is 62.0 mph. Your odometer will under-count miles by about 3.4%.
Will 335/35R24 lift my vehicle?
Ride height changes by half the diameter difference: +0.54 inches of ground clearance at the axle.

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