285/45R20 in Inches

Tire size 285/45R20 refers to the tire size in numbers and letters such as the first number “285” 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 285/45R20 tire in inches can be described as a tire with a width of about 11.2 inches, a sidewall height of about 5 inches, and it fits on a 20-inch wheel.

Converting 285/45R20 in Inches

285/45R20 inches mm
Tire Diameter 30.1 inches 764 mm
Tread Width 11.2 inches 285 mm
Rim Diameter 20 inches 508 mm
Sidewall Height 5 inches 128 mm
Circumference 94.5 inches 2399 mm
Revolutions 670 per mile 417 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

285/45R20 Alternate Tire Size

Tire Size Overall Diameter Difference
305/30R22 29.3″ (743 mm) -2.7%
235/50R20 29.3″ (744 mm) -2.6%
295/40R20 29.3″ (744 mm) -2.6%
235/45R21 29.3″ (745 mm) -2.5%
265/40R21 29.3″ (745 mm) -2.5%
265/35R22 29.3″ (745 mm) -2.5%
265/45R20 29.4″ (746 mm) -2.4%
305/35R21 29.4″ (747 mm) -2.2%
315/30R22 29.5″ (749 mm) -2%
275/35R22 29.6″ (751 mm) -1.7%
305/40R20 29.6″ (752 mm) -1.6%
245/45R21 29.6″ (753 mm) -1.4%
315/35R21 29.6″ (753 mm) -1.4%
275/40R21 29.6″ (753 mm) -1.4%
245/50R20 29.7″ (754 mm) -1.3%
275/45R20 29.8″ (756 mm) -1%
285/35R22 29.9″ (759 mm) -0.7%
285/40R21 30″ (761 mm) -0.4%
255/45R21 30″ (763 mm) -0.1%
255/40R22 30″ (763 mm) -0.1%
255/50R20 30.1″ (764 mm) 0%
295/35R22 30.1″ (765 mm) 0.1%
235/55R20 30.2″ (766 mm) 0.3%
295/40R21 30.3″ (769 mm) 0.7%
265/40R22 30.4″ (771 mm) 0.9%
265/45R21 30.4″ (771 mm) 0.9%
305/35R22 30.4″ (773 mm) 1.2%
265/50R20 30.5″ (774 mm) 1.3%
295/45R20 30.5″ (774 mm) 1.3%
315/35R22 30.7″ (779 mm) 2%
275/40R22 30.7″ (779 mm) 2%
275/45R21 30.7″ (781 mm) 2.2%
305/45R20 30.8″ (782 mm) 2.4%
275/50R20 30.9″ (784 mm) 2.6%
315/40R21 30.9″ (785 mm) 2.7%

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