Tire Size Box

335/35R19 vs 335/45R19

335/45R19 compared with 335/35R19

+9.3% diameter, 0.0" width

335/45R19 is 30.87" tall vs 28.23". More than the 3% rule of thumb, so check carefully before switching.

28.2"19" rim4.6"13.2" wide
335/35R19 (solid) compared with 335/45R19 (dashed outline), drawn to scale

With 335/45R19 tires, when your speedometer says 60 mph you are really going

65.6 mph

335/45R19 is +2.64 inches (+9.3%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/35R19335/45R19Difference%
Overall diameter28.23"30.87"+2.64"+9.3%
Section width13.19"13.19"0.00"0.0%
Sidewall height4.62"5.94"+1.32"+28.6%
Circumference88.69"96.98"+8.29"+9.3%
Revolutions per mile714.4653.3−61.0−8.5%

Speedometer difference

If your vehicle came with 335/35R19 and you fit 335/45R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.9 mph+1.9 mph
30 mph32.8 mph+2.8 mph
40 mph43.7 mph+3.7 mph
50 mph54.7 mph+4.7 mph
60 mph65.6 mph+5.6 mph
65 mph71.1 mph+6.1 mph
70 mph76.5 mph+6.5 mph
75 mph82.0 mph+7.0 mph
80 mph87.5 mph+7.5 mph

Each size on its own

Questions

Which is bigger, 335/35R19 or 335/45R19?
335/45R19 is taller by 2.64 inches (30.87" vs 28.23"). 335/35R19 is the same width.
Can I replace 335/35R19 with 335/45R19?
It is not recommended without checking carefully. The diameter difference is +9.3%, 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 335/45R19 change my speedometer?
When your speedometer reads 60 mph with 335/45R19 fitted (calibrated for 335/35R19), your real speed is 65.6 mph. Your odometer will under-count miles by about 9.3%.
Will 335/45R19 lift my vehicle?
Ride height changes by half the diameter difference: +1.32 inches of ground clearance at the axle.

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