235/30R18 in Inches

Tire size 235/30R18 refers to the tire size in numbers and letters such as the first number “235” indicates the tire width in millimeters, the second number “30” indicates the aspect ratio of the tire and the last number indicates the diameter of the tire. A 235/30R18 tire in inches can be described as a tire with a width of about 9.3 inches, a sidewall height of about 2.8 inches, and it fits on a 18-inch wheel.

Converting 235/30R18 in Inches

235/30R18 inches mm
Tire Diameter 23.6 inches 599 mm
Tread Width 9.3 inches 235 mm
Rim Diameter 18 inches 457 mm
Sidewall Height 2.8 inches 71 mm
Circumference 74.1 inches 1881 mm
Revolutions 855 per mile 532 per km

Tire Size Calculator

The Tire Size Calculator is a convenient online tool that helps determine the correct tire dimensions for a vehicle, ensuring optimal performance and compatibility.

Tire Diameter
Tread Width
Rim Diameter
Sidewall Height
Circumference
Revolutions

235/30R18 Alternate Tire Size

Tire Size Overall Diameter Difference
165/40R18 23.2″ (589 mm) -1.7%
195/35R18 23.3″ (593 mm) -1%
225/30R18 23.3″ (593 mm) -1%
205/35R18 23.7″ (601 mm) 0.3%
245/30R18 23.8″ (605 mm) 1%
125/60R18 23.9″ (607 mm) 1.3%
215/35R18 23.9″ (607 mm) 1.3%
255/30R18 24.1″ (611 mm) 2%
225/35R18 24.2″ (615 mm) 2.7%
175/45R18 24.2″ (615 mm) 2.7%

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