165/45R15 in Inches

Tire size 165/45R15 refers to the tire size in numbers and letters such as the first number “165” indicates the tire width in millimeters, the second number “45” indicates the aspect ratio of the tire and the last number indicates the diameter of the tire. A 165/45R15 tire in inches can be described as a tire with a width of about 6.5 inches, a sidewall height of about 2.9 inches, and it fits on a 15-inch wheel.

Converting 165/45R15 in Inches

165/45R15 inches mm
Tire Diameter 20.8 inches 529 mm
Tread Width 6.5 inches 165 mm
Rim Diameter 15 inches 381 mm
Sidewall Height 2.9 inches 74 mm
Circumference 65.3 inches 1661 mm
Revolutions 970 per mile 602 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

165/45R15 Alternate Tire Size

Tire Size Overall Diameter Difference
105/70R15 20.8″ (529 mm) 0%
165/40R16 21.2″ (538 mm) 1.7%
115/70R15 21.4″ (543 mm) 2.6%

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