Tire Size Box

285/55R16 vs 285/60R16

285/60R16 compared with 285/55R16

+4.0% diameter, 0.0" width

285/60R16 is 29.46" tall vs 28.34". More than the 3% rule of thumb, so check carefully before switching.

28.3"16" rim6.2"11.2" wide
285/55R16 (solid) compared with 285/60R16 (dashed outline), drawn to scale

With 285/60R16 tires, when your speedometer says 60 mph you are really going

62.4 mph

285/60R16 is +1.12 inches (+4.0%) in overall diameter. That is more than the 3% most shops and makers recommend.

285/55R16285/60R16Difference%
Overall diameter28.34"29.46"+1.12"+4.0%
Section width11.22"11.22"0.00"0.0%
Sidewall height6.17"6.73"+0.56"+9.1%
Circumference89.04"92.57"+3.53"+4.0%
Revolutions per mile711.6684.5−27.1−3.8%

Speedometer difference

If your vehicle came with 285/55R16 and you fit 285/60R16, 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 mph41.6 mph+1.6 mph
50 mph52.0 mph+2.0 mph
60 mph62.4 mph+2.4 mph
65 mph67.6 mph+2.6 mph
70 mph72.8 mph+2.8 mph
75 mph78.0 mph+3.0 mph
80 mph83.2 mph+3.2 mph

Each size on its own

Questions

Which is bigger, 285/55R16 or 285/60R16?
285/60R16 is taller by 1.12 inches (29.46" vs 28.34"). 285/55R16 is the same width.
Can I replace 285/55R16 with 285/60R16?
It is not recommended without checking carefully. The diameter difference is +4.0%, 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 285/60R16 change my speedometer?
When your speedometer reads 60 mph with 285/60R16 fitted (calibrated for 285/55R16), your real speed is 62.4 mph. Your odometer will under-count miles by about 4.0%.
Will 285/60R16 lift my vehicle?
Ride height changes by half the diameter difference: +0.56 inches of ground clearance at the axle.

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