Tire Size Box

345/30R19 vs 335/35R19

335/35R19 compared with 345/30R19

+4.0% diameter, −0.4" width

335/35R19 is 28.23" tall vs 27.15". More than the 3% rule of thumb, so check carefully before switching.

27.1"19" rim4.1"13.6" wide
345/30R19 (solid) compared with 335/35R19 (dashed outline), drawn to scale

With 335/35R19 tires, when your speedometer says 60 mph you are really going

62.4 mph

335/35R19 is +1.08 inches (+4.0%) in overall diameter. That is more than the 3% most shops and makers recommend.

345/30R19335/35R19Difference%
Overall diameter27.15"28.23"+1.08"+4.0%
Section width13.58"13.19"−0.39"−2.9%
Sidewall height4.07"4.62"+0.54"+13.3%
Circumference85.29"88.69"+3.40"+4.0%
Revolutions per mile742.9714.4−28.5−3.8%

Speedometer difference

If your vehicle came with 345/30R19 and you fit 335/35R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.8 mph+0.8 mph
30 mph31.2 mph+1.2 mph
40 mph41.6 mph+1.6 mph
50 mph52.0 mph+2.0 mph
60 mph62.4 mph+2.4 mph
65 mph67.6 mph+2.6 mph
70 mph72.8 mph+2.8 mph
75 mph78.0 mph+3.0 mph
80 mph83.2 mph+3.2 mph

Each size on its own

Questions

Which is bigger, 345/30R19 or 335/35R19?
335/35R19 is taller by 1.08 inches (28.23" vs 27.15"). 345/30R19 is wider by 0.39 inches.
Can I replace 345/30R19 with 335/35R19?
It is not recommended without checking carefully. The diameter difference is +4.0%, 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 335/35R19 change my speedometer?
When your speedometer reads 60 mph with 335/35R19 fitted (calibrated for 345/30R19), your real speed is 62.4 mph. Your odometer will under-count miles by about 4.0%.
Will 335/35R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.54 inches of ground clearance at the axle.

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