Tire Size Box

295/40R19 vs 295/50R19

295/50R19 compared with 295/40R19

+8.2% diameter, 0.0" width

295/50R19 is 30.61" tall vs 28.29". More than the 3% rule of thumb, so check carefully before switching.

28.3"19" rim4.6"11.6" wide
295/40R19 (solid) compared with 295/50R19 (dashed outline), drawn to scale

With 295/50R19 tires, when your speedometer says 60 mph you are really going

64.9 mph

295/50R19 is +2.32 inches (+8.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

295/40R19295/50R19Difference%
Overall diameter28.29"30.61"+2.32"+8.2%
Section width11.61"11.61"0.00"0.0%
Sidewall height4.65"5.81"+1.16"+25.0%
Circumference88.88"96.18"+7.30"+8.2%
Revolutions per mile712.9658.8−54.1−7.6%

Speedometer difference

If your vehicle came with 295/40R19 and you fit 295/50R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.6 mph+1.6 mph
30 mph32.5 mph+2.5 mph
40 mph43.3 mph+3.3 mph
50 mph54.1 mph+4.1 mph
60 mph64.9 mph+4.9 mph
65 mph70.3 mph+5.3 mph
70 mph75.7 mph+5.7 mph
75 mph81.2 mph+6.2 mph
80 mph86.6 mph+6.6 mph

Each size on its own

Questions

Which is bigger, 295/40R19 or 295/50R19?
295/50R19 is taller by 2.32 inches (30.61" vs 28.29"). 295/40R19 is the same width.
Can I replace 295/40R19 with 295/50R19?
It is not recommended without checking carefully. The diameter difference is +8.2%, 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 295/50R19 change my speedometer?
When your speedometer reads 60 mph with 295/50R19 fitted (calibrated for 295/40R19), your real speed is 64.9 mph. Your odometer will under-count miles by about 8.2%.
Will 295/50R19 lift my vehicle?
Ride height changes by half the diameter difference: +1.16 inches of ground clearance at the axle.

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