Tire Size Box

325/55R19 vs 325/60R19

325/60R19 compared with 325/55R19

+3.9% diameter, 0.0" width

325/60R19 is 34.35" tall vs 33.07". More than the 3% rule of thumb, so check carefully before switching.

33.1"19" rim7.0"12.8" wide
325/55R19 (solid) compared with 325/60R19 (dashed outline), drawn to scale

With 325/60R19 tires, when your speedometer says 60 mph you are really going

62.3 mph

325/60R19 is +1.28 inches (+3.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

325/55R19325/60R19Difference%
Overall diameter33.07"34.35"+1.28"+3.9%
Section width12.80"12.80"0.00"0.0%
Sidewall height7.04"7.68"+0.64"+9.1%
Circumference103.91"107.93"+4.02"+3.9%
Revolutions per mile609.8587.1−22.7−3.7%

Speedometer difference

If your vehicle came with 325/55R19 and you fit 325/60R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.8 mph+0.8 mph
30 mph31.2 mph+1.2 mph
40 mph41.5 mph+1.5 mph
50 mph51.9 mph+1.9 mph
60 mph62.3 mph+2.3 mph
65 mph67.5 mph+2.5 mph
70 mph72.7 mph+2.7 mph
75 mph77.9 mph+2.9 mph
80 mph83.1 mph+3.1 mph

Each size on its own

Questions

Which is bigger, 325/55R19 or 325/60R19?
325/60R19 is taller by 1.28 inches (34.35" vs 33.07"). 325/55R19 is the same width.
Can I replace 325/55R19 with 325/60R19?
It is not recommended without checking carefully. The diameter difference is +3.9%, 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 325/60R19 change my speedometer?
When your speedometer reads 60 mph with 325/60R19 fitted (calibrated for 325/55R19), your real speed is 62.3 mph. Your odometer will under-count miles by about 3.9%.
Will 325/60R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.64 inches of ground clearance at the axle.

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