Tire Size Box

245/55R14 vs 245/60R14

245/60R14 compared with 245/55R14

+3.9% diameter, 0.0" width

245/60R14 is 25.57" tall vs 24.61". More than the 3% rule of thumb, so check carefully before switching.

24.6"14" rim5.3"9.6" wide
245/55R14 (solid) compared with 245/60R14 (dashed outline), drawn to scale

With 245/60R14 tires, when your speedometer says 60 mph you are really going

62.4 mph

245/60R14 is +0.96 inches (+3.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

245/55R14245/60R14Difference%
Overall diameter24.61"25.57"+0.96"+3.9%
Section width9.65"9.65"0.00"0.0%
Sidewall height5.31"5.79"+0.48"+9.1%
Circumference77.32"80.35"+3.03"+3.9%
Revolutions per mile819.5788.6−30.9−3.8%

Speedometer difference

If your vehicle came with 245/55R14 and you fit 245/60R14, 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 mph67.5 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, 245/55R14 or 245/60R14?
245/60R14 is taller by 0.96 inches (25.57" vs 24.61"). 245/55R14 is the same width.
Can I replace 245/55R14 with 245/60R14?
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 245/60R14 change my speedometer?
When your speedometer reads 60 mph with 245/60R14 fitted (calibrated for 245/55R14), your real speed is 62.4 mph. Your odometer will under-count miles by about 3.9%.
Will 245/60R14 lift my vehicle?
Ride height changes by half the diameter difference: +0.48 inches of ground clearance at the axle.

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