Tire Size Box

335/45R19 vs 335/50R19

335/50R19 compared with 335/45R19

+4.3% diameter, 0.0" width

335/50R19 is 32.19" tall vs 30.87". More than the 3% rule of thumb, so check carefully before switching.

30.9"19" rim5.9"13.2" wide
335/45R19 (solid) compared with 335/50R19 (dashed outline), drawn to scale

With 335/50R19 tires, when your speedometer says 60 mph you are really going

62.6 mph

335/50R19 is +1.32 inches (+4.3%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/45R19335/50R19Difference%
Overall diameter30.87"32.19"+1.32"+4.3%
Section width13.19"13.19"0.00"0.0%
Sidewall height5.94"6.59"+0.66"+11.1%
Circumference96.98"101.12"+4.14"+4.3%
Revolutions per mile653.3626.6−26.8−4.1%

Speedometer difference

If your vehicle came with 335/45R19 and you fit 335/50R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.9 mph+0.9 mph
30 mph31.3 mph+1.3 mph
40 mph41.7 mph+1.7 mph
50 mph52.1 mph+2.1 mph
60 mph62.6 mph+2.6 mph
65 mph67.8 mph+2.8 mph
70 mph73.0 mph+3.0 mph
75 mph78.2 mph+3.2 mph
80 mph83.4 mph+3.4 mph

Each size on its own

Questions

Which is bigger, 335/45R19 or 335/50R19?
335/50R19 is taller by 1.32 inches (32.19" vs 30.87"). 335/45R19 is the same width.
Can I replace 335/45R19 with 335/50R19?
It is not recommended without checking carefully. The diameter difference is +4.3%, 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 335/50R19 change my speedometer?
When your speedometer reads 60 mph with 335/50R19 fitted (calibrated for 335/45R19), your real speed is 62.6 mph. Your odometer will under-count miles by about 4.3%.
Will 335/50R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.66 inches of ground clearance at the axle.

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