Tire Size Box

265/70R14 vs 265/75R14

265/75R14 compared with 265/70R14

+3.6% diameter, 0.0" width

265/75R14 is 29.65" tall vs 28.61". More than the 3% rule of thumb, so check carefully before switching.

28.6"14" rim7.3"10.4" wide
265/70R14 (solid) compared with 265/75R14 (dashed outline), drawn to scale

With 265/75R14 tires, when your speedometer says 60 mph you are really going

62.2 mph

265/75R14 is +1.04 inches (+3.6%) in overall diameter. That is more than the 3% most shops and makers recommend.

265/70R14265/75R14Difference%
Overall diameter28.61"29.65"+1.04"+3.6%
Section width10.43"10.43"0.00"0.0%
Sidewall height7.30"7.82"+0.52"+7.1%
Circumference89.87"93.15"+3.28"+3.6%
Revolutions per mile705.0680.2−24.8−3.5%

Speedometer difference

If your vehicle came with 265/70R14 and you fit 265/75R14, 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 mph77.7 mph+2.7 mph
80 mph82.9 mph+2.9 mph

Each size on its own

Questions

Which is bigger, 265/70R14 or 265/75R14?
265/75R14 is taller by 1.04 inches (29.65" vs 28.61"). 265/70R14 is the same width.
Can I replace 265/70R14 with 265/75R14?
It is not recommended without checking carefully. The diameter difference is +3.6%, 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 265/75R14 change my speedometer?
When your speedometer reads 60 mph with 265/75R14 fitted (calibrated for 265/70R14), your real speed is 62.2 mph. Your odometer will under-count miles by about 3.6%.
Will 265/75R14 lift my vehicle?
Ride height changes by half the diameter difference: +0.52 inches of ground clearance at the axle.

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