285/60R18 in Inches

A 285/60R18 tire has a 31.5-inch diameter, a 11.2-inch width, and is designed for a 18-inch rim.

In high flotation terms, this tire is labeled as 31.5x11.2R18.

285/60R18 Tire Size
11.2"
31.5"
285/60R18 Tire Size in Inches
285/60R18 Tire Circumference
98.8"
18"
6.7"
641 revs/mile

285/60R18 Tire Overview

Height
31.5 inches
Wheel Diameter
18 inches
Tire Width
11.2 inches
Circumference
98.8 inches
Sidewall Height
6.7 inches
Revolutions
641 per mile
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What does 285/60R18 mean?

285/60R18 tire size meaning in inches

285/60R18 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.
  • 60 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.
  • 18 is the diameter of the wheel in inches, on which the tire is to be mounted.

285/60R18 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter31.5 in799.2 mm
Section Width11.2 in285 mm
Rim Height18 in457 mm
Sidewall Height6.7 in171 mm
Circumference98.8 in2510.8 mm
Revolutions641 revs/mile
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FAQ About 285/60R18 Tire

How tall is a 285/60R18 tire?

The height (or diameter) of a 285/60R18 tire is 31.5 inches

How wide is a 285/60R18 tire?

The width of a 285/60R18 tire is 285 mm, which is about 11.2 inches.

What size rim fits a 285/60R18 tire?

A 285/60R18 tire fits on a rim that is 18 inches in diameter.

What does the 60 in a 285/60R18 tire mean?

The 60 in a 285/60R18 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 60% of its width.


Alternative Tire Sizes for 285/60R18

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 285/60R18:

Tire SizeDiameterRim
245/70R1831.5″ (Equal)18 x n/a
225/75R1831.3″ (-0.6%)18 x n/a
235/70R1831.0″ (-1.6%)18 x 6.5-8.5
235/75R1831.9″ (1.3%)18 x n/a
255/65R1831.1″ (-1.3%)18 x 7.0-9.0
255/70R1832.1″ (1.9%)18 x 6.5-8.5
265/65R1831.6″ (0.3%)18 x 7.5-9.5
275/60R1831.0″ (-1.6%)18 x 7.5-9.5
275/65R1832.1″ (1.9%)18 x 7.5-9.5
305/60R1832.4″ (2.9%)18 x 8.5-11.0