Tire Size Box

245/60R13 vs 245/65R13

245/65R13 compared with 245/60R13

+3.9% diameter, 0.0" width

245/65R13 is 25.54" tall vs 24.57". More than the 3% rule of thumb, so check carefully before switching.

24.6"13" rim5.8"9.6" wide
245/60R13 (solid) compared with 245/65R13 (dashed outline), drawn to scale

With 245/65R13 tires, when your speedometer says 60 mph you are really going

62.4 mph

245/65R13 is +0.96 inches (+3.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

245/60R13245/65R13Difference%
Overall diameter24.57"25.54"+0.96"+3.9%
Section width9.65"9.65"0.00"0.0%
Sidewall height5.79"6.27"+0.48"+8.3%
Circumference77.20"80.23"+3.03"+3.9%
Revolutions per mile820.7789.7−31.0−3.8%

Speedometer difference

If your vehicle came with 245/60R13 and you fit 245/65R13, 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 mph72.7 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, 245/60R13 or 245/65R13?
245/65R13 is taller by 0.96 inches (25.54" vs 24.57"). 245/60R13 is the same width.
Can I replace 245/60R13 with 245/65R13?
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 245/65R13 change my speedometer?
When your speedometer reads 60 mph with 245/65R13 fitted (calibrated for 245/60R13), your real speed is 62.4 mph. Your odometer will under-count miles by about 3.9%.
Will 245/65R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.48 inches of ground clearance at the axle.

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