Tire Size Box

245/60R19 vs 245/65R19

245/65R19 compared with 245/60R19

+3.2% diameter, 0.0" width

245/65R19 is 31.54" tall vs 30.57". More than the 3% rule of thumb, so check carefully before switching.

30.6"19" rim5.8"9.6" wide
245/60R19 (solid) compared with 245/65R19 (dashed outline), drawn to scale

With 245/65R19 tires, when your speedometer says 60 mph you are really going

61.9 mph

245/65R19 is +0.96 inches (+3.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

245/60R19245/65R19Difference%
Overall diameter30.57"31.54"+0.96"+3.2%
Section width9.65"9.65"0.00"0.0%
Sidewall height5.79"6.27"+0.48"+8.3%
Circumference96.05"99.08"+3.03"+3.2%
Revolutions per mile659.6639.5−20.2−3.1%

Speedometer difference

If your vehicle came with 245/60R19 and you fit 245/65R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.6 mph+0.6 mph
30 mph30.9 mph+0.9 mph
40 mph41.3 mph+1.3 mph
50 mph51.6 mph+1.6 mph
60 mph61.9 mph+1.9 mph
65 mph67.1 mph+2.1 mph
70 mph72.2 mph+2.2 mph
75 mph77.4 mph+2.4 mph
80 mph82.5 mph+2.5 mph

Each size on its own

Questions

Which is bigger, 245/60R19 or 245/65R19?
245/65R19 is taller by 0.96 inches (31.54" vs 30.57"). 245/60R19 is the same width.
Can I replace 245/60R19 with 245/65R19?
It is not recommended without checking carefully. The diameter difference is +3.2%, 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 245/65R19 change my speedometer?
When your speedometer reads 60 mph with 245/65R19 fitted (calibrated for 245/60R19), your real speed is 61.9 mph. Your odometer will under-count miles by about 3.2%.
Will 245/65R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.48 inches of ground clearance at the axle.

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