Tire Size Box

245/60R14 vs 265/60R14

265/60R14 compared with 245/60R14

+3.7% diameter, +0.8" width

265/60R14 is 26.52" tall vs 25.57". More than the 3% rule of thumb, so check carefully before switching.

25.6"14" rim5.8"9.6" wide
245/60R14 (solid) compared with 265/60R14 (dashed outline), drawn to scale

With 265/60R14 tires, when your speedometer says 60 mph you are really going

62.2 mph

265/60R14 is +0.94 inches (+3.7%) in overall diameter. That is more than the 3% most shops and makers recommend.

245/60R14265/60R14Difference%
Overall diameter25.57"26.52"+0.94"+3.7%
Section width9.65"10.43"+0.79"+8.2%
Sidewall height5.79"6.26"+0.47"+8.2%
Circumference80.35"83.31"+2.97"+3.7%
Revolutions per mile788.6760.5−28.1−3.6%

Speedometer difference

If your vehicle came with 245/60R14 and you fit 265/60R14, 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 mph51.8 mph+1.8 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, 245/60R14 or 265/60R14?
265/60R14 is taller by 0.94 inches (26.52" vs 25.57"). 265/60R14 is wider by 0.79 inches.
Can I replace 245/60R14 with 265/60R14?
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 265/60R14 change my speedometer?
When your speedometer reads 60 mph with 265/60R14 fitted (calibrated for 245/60R14), your real speed is 62.2 mph. Your odometer will under-count miles by about 3.7%.
Will 265/60R14 lift my vehicle?
Ride height changes by half the diameter difference: +0.47 inches of ground clearance at the axle.

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