215/50R18 tire size

A 215/50R18 tire is 26.46 in (672.2 mm) tall and 8.46 in (215.0 mm) wide, and turns 762 revolutions per mile.

215/50R18 dimensions
MeasurementInchesMillimeters
Overall diameter26.46 in672.2 mm
Section width8.46 in215.0 mm
Sidewall height4.23 in107.5 mm
Rim diameter18.00 in457.2 mm
Circumference83.14 in2,112 mm
Revolutions per mile762
Flotation equivalent26.5x8.5R18 (approx.)

215/50R18 is a 18-inch tire with a 215 mm (8.46 in) section width and a 50% aspect ratio, giving a 4.23-inch sidewall and a flotation-style size of about 26.5x8.5R18.

Its overall diameter is 26.46 inches, so it rolls 83.1 inches per revolution and turns about 762 times per mile.

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

Compare 215/50R18 with plausible swaps

Sizes within 3% of 26.46 in diameter

Open 215/50R18 in the tire size calculator

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