Tire Size Box

305/50R19 vs 305/60R19

305/60R19 compared with 305/50R19

+7.7% diameter, 0.0" width

305/60R19 is 33.41" tall vs 31.01". More than the 3% rule of thumb, so check carefully before switching.

31.0"19" rim6.0"12.0" wide
305/50R19 (solid) compared with 305/60R19 (dashed outline), drawn to scale

With 305/60R19 tires, when your speedometer says 60 mph you are really going

64.6 mph

305/60R19 is +2.40 inches (+7.7%) in overall diameter. That is more than the 3% most shops and makers recommend.

305/50R19305/60R19Difference%
Overall diameter31.01"33.41"+2.40"+7.7%
Section width12.01"12.01"0.00"0.0%
Sidewall height6.00"7.20"+1.20"+20.0%
Circumference97.41"104.96"+7.54"+7.7%
Revolutions per mile650.4603.7−46.8−7.2%

Speedometer difference

If your vehicle came with 305/50R19 and you fit 305/60R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.5 mph+1.5 mph
30 mph32.3 mph+2.3 mph
40 mph43.1 mph+3.1 mph
50 mph53.9 mph+3.9 mph
60 mph64.6 mph+4.6 mph
65 mph70.0 mph+5.0 mph
70 mph75.4 mph+5.4 mph
75 mph80.8 mph+5.8 mph
80 mph86.2 mph+6.2 mph

Each size on its own

Questions

Which is bigger, 305/50R19 or 305/60R19?
305/60R19 is taller by 2.40 inches (33.41" vs 31.01"). 305/50R19 is the same width.
Can I replace 305/50R19 with 305/60R19?
It is not recommended without checking carefully. The diameter difference is +7.7%, 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 305/60R19 change my speedometer?
When your speedometer reads 60 mph with 305/60R19 fitted (calibrated for 305/50R19), your real speed is 64.6 mph. Your odometer will under-count miles by about 7.7%.
Will 305/60R19 lift my vehicle?
Ride height changes by half the diameter difference: +1.20 inches of ground clearance at the axle.

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