285/50R20 in Inches

A 285/50R20 tire has a 31.2-inch diameter, a 11.2-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 31.2x11.2R20.

285/50R20 Tire Size
11.2"
31.2"
285/50R20 Tire Size in Inches
285/50R20 Tire Circumference
98.1"
20"
5.6"
646 revs/mile

285/50R20 Tire Overview

Height
31.2 inches
Wheel Diameter
20 inches
Tire Width
11.2 inches
Circumference
98.1 inches
Sidewall Height
5.6 inches
Revolutions
646 per mile
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What does 285/50R20 mean?

285/50R20 tire size meaning in inches

285/50R20 is a tire size with the following dimensions:

  • 285 is the width of the tire in millimeters. This number also indicates the appropriate width of the rim on which the tire should be mounted.
  • 50 is the aspect ratio, which is the ratio of the tire's height to its width. This affects the tire's handling and ride comfort
  • R indicates the tire's construction type, meaning it has a radial construction. This provides stability and precision to the tire.
  • 20 is the diameter of the wheel in inches, on which the tire is to be mounted.

285/50R20 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter31.2 in793 mm
Section Width11.2 in285 mm
Rim Height20 in508 mm
Sidewall Height5.6 in142.5 mm
Circumference98.1 in2491.3 mm
Revolutions646 revs/mile
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FAQ About 285/50R20 Tire

How tall is a 285/50R20 tire?

The height (or diameter) of a 285/50R20 tire is 31.2 inches

How wide is a 285/50R20 tire?

The width of a 285/50R20 tire is 285 mm, which is about 11.2 inches.

What size rim fits a 285/50R20 tire?

A 285/50R20 tire fits on a rim that is 20 inches in diameter.

What does the 50 in a 285/50R20 tire mean?

The 50 in a 285/50R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 50% of its width.


Alternative Tire Sizes for 285/50R20

Typically, it's recommended to choose a tire with a diameter (height) within 3% of the original equipment manufacturer (OEM) tire size.

However, keep in mind that this is a general guideline and not an absolute rule.

Here are some tire sizes that are compatible with the 285/50R20:

Tire SizeDiameterRim
235/60R2031.1″ (-0.3%)20 x 6.5-8.5
245/60R2031.6″ (1.3%)20 x 7.0-8.5
255/55R2031.0″ (-0.6%)20 x 7.0-9.0
255/60R2032.0″ (2.6%)20 x 7.0-9.0
265/50R2030.4″ (-2.6%)20 x 7.5-9.5
265/55R2031.5″ (1.0%)20 x n/a
275/50R2030.8″ (-1.3%)20 x 7.5-9.5
275/55R2031.9″ (2.2%)20 x 7.5-9.5
295/45R2030.5″ (-2.2%)20 x 9.5-11.0
295/50R2031.6″ (1.3%)20 x 8.0-10.5
305/45R2030.8″ (-1.3%)20 x 9.5-11.5
305/50R2032.0″ (2.6%)20 x 8.5-11.0