Tire Size Box

335/50R19 vs 335/55R19

335/55R19 compared with 335/50R19

+4.1% diameter, 0.0" width

335/55R19 is 33.51" tall vs 32.19". More than the 3% rule of thumb, so check carefully before switching.

32.2"19" rim6.6"13.2" wide
335/50R19 (solid) compared with 335/55R19 (dashed outline), drawn to scale

With 335/55R19 tires, when your speedometer says 60 mph you are really going

62.5 mph

335/55R19 is +1.32 inches (+4.1%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/50R19335/55R19Difference%
Overall diameter32.19"33.51"+1.32"+4.1%
Section width13.19"13.19"0.00"0.0%
Sidewall height6.59"7.25"+0.66"+10.0%
Circumference101.12"105.27"+4.14"+4.1%
Revolutions per mile626.6601.9−24.7−3.9%

Speedometer difference

If your vehicle came with 335/50R19 and you fit 335/55R19, 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 mph62.5 mph+2.5 mph
65 mph67.7 mph+2.7 mph
70 mph72.9 mph+2.9 mph
75 mph78.1 mph+3.1 mph
80 mph83.3 mph+3.3 mph

Each size on its own

Questions

Which is bigger, 335/50R19 or 335/55R19?
335/55R19 is taller by 1.32 inches (33.51" vs 32.19"). 335/50R19 is the same width.
Can I replace 335/50R19 with 335/55R19?
It is not recommended without checking carefully. The diameter difference is +4.1%, 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 335/55R19 change my speedometer?
When your speedometer reads 60 mph with 335/55R19 fitted (calibrated for 335/50R19), your real speed is 62.5 mph. Your odometer will under-count miles by about 4.1%.
Will 335/55R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.66 inches of ground clearance at the axle.

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