275/50R18 in Inches

A 275/50R18 tire has a 28.8-inch diameter, a 10.8-inch width, and is designed for a 18-inch rim.

In high flotation terms, this tire is labeled as 28.8x10.8R18.

275/50R18 Tire Size
10.8"
28.8"
275/50R18 Tire Size in Inches
275/50R18 Tire Circumference
90.6"
18"
5.4"
699.6 revs/mile

275/50R18 Tire Overview

Height
28.8 inches
Wheel Diameter
18 inches
Tire Width
10.8 inches
Circumference
90.6 inches
Sidewall Height
5.4 inches
Revolutions
699.6 per mile
Tirelib.com

What does 275/50R18 mean?

275/50R18 tire size meaning in inches

275/50R18 is a tire size with the following dimensions:

  • 275 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.
  • 18 is the diameter of the wheel in inches, on which the tire is to be mounted.

275/50R18 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter28.8 in732.2 mm
Section Width10.8 in275 mm
Rim Height18 in457 mm
Sidewall Height5.4 in137.5 mm
Circumference90.6 in2300.3 mm
Revolutions699.6 revs/mile
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FAQ About 275/50R18 Tire

How tall is a 275/50R18 tire?

The height (or diameter) of a 275/50R18 tire is 28.8 inches

How wide is a 275/50R18 tire?

The width of a 275/50R18 tire is 275 mm, which is about 10.8 inches.

What size rim fits a 275/50R18 tire?

A 275/50R18 tire fits on a rim that is 18 inches in diameter.

What does the 50 in a 275/50R18 tire mean?

The 50 in a 275/50R18 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 50% of its width.


Alternative Tire Sizes for 275/50R18

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 275/50R18:

Tire SizeDiameterRim
305/45R1828.8″ (Equal)18 x 9.5-11.5
155/85R1828.4″ (-1.4%)18 x n/a
155/90R1829.0″ (0.7%)18 x n/a
175/80R1829.0″ (0.7%)18 x n/a
225/60R1828.6″ (-0.7%)18 x 6.0-8.0
225/65R1829.5″ (2.4%)18 x 6.0-8.0
235/55R1828.2″ (-2.1%)18 x 6.5-8.5
235/60R1829.1″ (1.0%)18 x 6.5-8.5
245/55R1828.6″ (-0.7%)18 x 7.0-8.5
245/60R1829.6″ (2.8%)18 x 7.0-8.5
255/50R1828.0″ (-2.8%)18 x 7.0-9.0
255/55R1829.0″ (0.7%)18 x 7.0-9.0
265/50R1828.4″ (-1.4%)18 x 7.5-9.5
265/55R1829.5″ (2.4%)18 x 7.5-9.5
285/45R1828.1″ (-2.4%)18 x 9.0-10.5
285/50R1829.2″ (1.4%)18 x 8.0-10.0
295/45R1828.5″ (-1.0%)18 x 9.5-11.0
325/45R1829.5″ (2.4%)18 x n/a