Tire Size Box

335/50R20 vs 335/60R20

335/60R20 compared with 335/50R20

+7.9% diameter, 0.0" width

335/60R20 is 35.83" tall vs 33.19". More than the 3% rule of thumb, so check carefully before switching.

33.2"20" rim6.6"13.2" wide
335/50R20 (solid) compared with 335/60R20 (dashed outline), drawn to scale

With 335/60R20 tires, when your speedometer says 60 mph you are really going

64.8 mph

335/60R20 is +2.64 inches (+7.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/50R20335/60R20Difference%
Overall diameter33.19"35.83"+2.64"+7.9%
Section width13.19"13.19"0.00"0.0%
Sidewall height6.59"7.91"+1.32"+20.0%
Circumference104.27"112.55"+8.29"+7.9%
Revolutions per mile607.7562.9−44.7−7.4%

Speedometer difference

If your vehicle came with 335/50R20 and you fit 335/60R20, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.6 mph+1.6 mph
30 mph32.4 mph+2.4 mph
40 mph43.2 mph+3.2 mph
50 mph54.0 mph+4.0 mph
60 mph64.8 mph+4.8 mph
65 mph70.2 mph+5.2 mph
70 mph75.6 mph+5.6 mph
75 mph81.0 mph+6.0 mph
80 mph86.4 mph+6.4 mph

Each size on its own

Questions

Which is bigger, 335/50R20 or 335/60R20?
335/60R20 is taller by 2.64 inches (35.83" vs 33.19"). 335/50R20 is the same width.
Can I replace 335/50R20 with 335/60R20?
It is not recommended without checking carefully. The diameter difference is +7.9%, 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 335/60R20 change my speedometer?
When your speedometer reads 60 mph with 335/60R20 fitted (calibrated for 335/50R20), your real speed is 64.8 mph. Your odometer will under-count miles by about 7.9%.
Will 335/60R20 lift my vehicle?
Ride height changes by half the diameter difference: +1.32 inches of ground clearance at the axle.

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