255/70R17 tire size

A 255/70R17 tire is 31.06 in (788.8 mm) tall and 10.04 in (255.0 mm) wide, and turns 649 revolutions per mile.

255/70R17 dimensions
MeasurementInchesMillimeters
Overall diameter31.06 in788.8 mm
Section width10.04 in255.0 mm
Sidewall height7.03 in178.5 mm
Rim diameter17.00 in431.8 mm
Circumference97.56 in2,478 mm
Revolutions per mile649
Flotation equivalent31.1x10.0R17 (approx.)

255/70R17 is a 17-inch tire with a 255 mm (10.04 in) section width and a 70% aspect ratio, giving a 7.03-inch sidewall and a flotation-style size of about 31.1x10.0R17.

Its overall diameter is 31.06 inches, so it rolls 97.6 inches per revolution and turns about 649 times per mile.

54 other sizes in this list are within 3% of that diameter.

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Sizes within 3% of 31.06 in diameter

Open 255/70R17 in the tire size calculator

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.