285/45R18 in Inches

A 285/45R18 tire has a 28.1-inch diameter, a 11.2-inch width, and is designed for a 18-inch rim.

In high flotation terms, this tire is labeled as 28.1x11.2R18.

285/45R18 Tire Size
11.2"
28.1"
285/45R18 Tire Size in Inches
285/45R18 Tire Circumference
88.3"
18"
5"
717.8 revs/mile

285/45R18 Tire Overview

Height
28.1 inches
Wheel Diameter
18 inches
Tire Width
11.2 inches
Circumference
88.3 inches
Sidewall Height
5 inches
Revolutions
717.8 per mile
Tirelib.com

What does 285/45R18 mean?

285/45R18 tire size meaning in inches

285/45R18 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.
  • 45 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.

285/45R18 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter28.1 in713.7 mm
Section Width11.2 in285 mm
Rim Height18 in457 mm
Sidewall Height5 in128.3 mm
Circumference88.3 in2242.2 mm
Revolutions717.8 revs/mile
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FAQ About 285/45R18 Tire

How tall is a 285/45R18 tire?

The height (or diameter) of a 285/45R18 tire is 28.1 inches

How wide is a 285/45R18 tire?

The width of a 285/45R18 tire is 285 mm, which is about 11.2 inches.

What size rim fits a 285/45R18 tire?

A 285/45R18 tire fits on a rim that is 18 inches in diameter.

What does the 45 in a 285/45R18 tire mean?

The 45 in a 285/45R18 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 45% of its width.

Alternative Tire Sizes for 285/45R18

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 285/45R18:

Tire SizeDiameterRim
145/85R1827.7″ (-1.4%)18 x n/a
155/80R1827.8″ (-1.1%)18 x n/a
155/85R1828.4″ (1.1%)18 x n/a
205/60R1827.7″ (-1.4%)18 x 5.0-7.5
215/55R1827.3″ (-2.8%)18 x 6.0-7.5
225/55R1827.7″ (-1.4%)18 x 6.0-8.0
225/60R1828.6″ (1.8%)18 x 6.0-8.0
235/50R1827.3″ (-2.8%)18 x 6.5-8.5
235/55R1828.2″ (0.4%)18 x 6.5-8.5
245/50R1827.6″ (-1.8%)18 x 7.0-8.5
245/55R1828.6″ (1.8%)18 x 7.0-8.5
255/50R1828.0″ (-0.4%)18 x 7.0-9.0
265/45R1827.4″ (-2.5%)18 x 8.5-10.0
265/50R1828.4″ (1.1%)18 x 7.5-9.5
275/45R1827.7″ (-1.4%)18 x 8.5-10.5
275/50R1828.8″ (2.5%)18 x 7.5-9.5
295/40R1827.3″ (-2.8%)18 x 10.0-11.5
295/45R1828.5″ (1.4%)18 x 9.5-11.0
305/40R1827.6″ (-1.8%)18 x 10.0-12.0
305/45R1828.8″ (2.5%)18 x 9.5-11.5
315/40R1827.9″ (-0.7%)18 x 10.5-12.5
345/35R1827.5″ (-2.1%)18 x 11.5-13.5