Tire Size Box

275/60R16 vs 275/65R16

275/65R16 compared with 275/60R16

+3.7% diameter, 0.0" width

275/65R16 is 30.07" tall vs 28.99". More than the 3% rule of thumb, so check carefully before switching.

29.0"16" rim6.5"10.8" wide
275/60R16 (solid) compared with 275/65R16 (dashed outline), drawn to scale

With 275/65R16 tires, when your speedometer says 60 mph you are really going

62.2 mph

275/65R16 is +1.08 inches (+3.7%) in overall diameter. That is more than the 3% most shops and makers recommend.

275/60R16275/65R16Difference%
Overall diameter28.99"30.07"+1.08"+3.7%
Section width10.83"10.83"0.00"0.0%
Sidewall height6.50"7.04"+0.54"+8.3%
Circumference91.08"94.48"+3.40"+3.7%
Revolutions per mile695.6670.6−25.0−3.6%

Speedometer difference

If your vehicle came with 275/60R16 and you fit 275/65R16, 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, 275/60R16 or 275/65R16?
275/65R16 is taller by 1.08 inches (30.07" vs 28.99"). 275/60R16 is the same width.
Can I replace 275/60R16 with 275/65R16?
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 275/65R16 change my speedometer?
When your speedometer reads 60 mph with 275/65R16 fitted (calibrated for 275/60R16), your real speed is 62.2 mph. Your odometer will under-count miles by about 3.7%.
Will 275/65R16 lift my vehicle?
Ride height changes by half the diameter difference: +0.54 inches of ground clearance at the axle.

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