Tire Size Box

225/55R14 vs 225/60R14

225/60R14 compared with 225/55R14

+3.7% diameter, 0.0" width

225/60R14 is 24.63" tall vs 23.74". More than the 3% rule of thumb, so check carefully before switching.

23.7"14" rim4.9"8.9" wide
225/55R14 (solid) compared with 225/60R14 (dashed outline), drawn to scale

With 225/60R14 tires, when your speedometer says 60 mph you are really going

62.2 mph

225/60R14 is +0.89 inches (+3.7%) in overall diameter. That is more than the 3% most shops and makers recommend.

225/55R14225/60R14Difference%
Overall diameter23.74"24.63"+0.89"+3.7%
Section width8.86"8.86"0.00"0.0%
Sidewall height4.87"5.31"+0.44"+9.1%
Circumference74.59"77.38"+2.78"+3.7%
Revolutions per mile849.4818.8−30.5−3.6%

Speedometer difference

If your vehicle came with 225/55R14 and you fit 225/60R14, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.1 mph+1.1 mph
40 mph41.5 mph+1.5 mph
50 mph51.9 mph+1.9 mph
60 mph62.2 mph+2.2 mph
65 mph67.4 mph+2.4 mph
70 mph72.6 mph+2.6 mph
75 mph77.8 mph+2.8 mph
80 mph83.0 mph+3.0 mph

Each size on its own

Questions

Which is bigger, 225/55R14 or 225/60R14?
225/60R14 is taller by 0.89 inches (24.63" vs 23.74"). 225/55R14 is the same width.
Can I replace 225/55R14 with 225/60R14?
It is not recommended without checking carefully. The diameter difference is +3.7%, 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 225/60R14 change my speedometer?
When your speedometer reads 60 mph with 225/60R14 fitted (calibrated for 225/55R14), your real speed is 62.2 mph. Your odometer will under-count miles by about 3.7%.
Will 225/60R14 lift my vehicle?
Ride height changes by half the diameter difference: +0.44 inches of ground clearance at the axle.

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