285/35R18 tire size

A 285/35R18 tire is 25.85 in (656.7 mm) tall and 11.22 in (285.0 mm) wide, and turns 780 revolutions per mile.

285/35R18 dimensions
MeasurementInchesMillimeters
Overall diameter25.85 in656.7 mm
Section width11.22 in285.0 mm
Sidewall height3.93 in99.8 mm
Rim diameter18.00 in457.2 mm
Circumference81.22 in2,063 mm
Revolutions per mile780
Flotation equivalent25.9x11.2R18 (approx.)

285/35R18 is a 18-inch tire with a 285 mm (11.22 in) section width and a 35% aspect ratio, giving a 3.93-inch sidewall and a flotation-style size of about 25.9x11.2R18.

Its overall diameter is 25.85 inches, so it rolls 81.2 inches per revolution and turns about 780 times per mile.

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

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Sizes within 3% of 25.85 in diameter

Open 285/35R18 in the tire size calculator

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