275/40R20 in Inches

A 275/40R20 tire has a 28.7-inch diameter, a 10.8-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 28.7x10.8R20.

275/40R20 Tire Size
10.8"
28.7"
275/40R20 Tire Size in Inches
275/40R20 Tire Circumference
90"
20"
4.3"
703.7 revs/mile

275/40R20 Tire Overview

Height
28.7 inches
Wheel Diameter
20 inches
Tire Width
10.8 inches
Circumference
90 inches
Sidewall Height
4.3 inches
Revolutions
703.7 per mile
Tirelib.com

What does 275/40R20 mean?

275/40R20 tire size meaning in inches

275/40R20 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.
  • 40 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.

275/40R20 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter28.7 in728 mm
Section Width10.8 in275 mm
Rim Height20 in508 mm
Sidewall Height4.3 in110 mm
Circumference90 in2287.1 mm
Revolutions703.7 revs/mile
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FAQ About 275/40R20 Tire

How tall is a 275/40R20 tire?

The height (or diameter) of a 275/40R20 tire is 28.7 inches

How wide is a 275/40R20 tire?

The width of a 275/40R20 tire is 275 mm, which is about 10.8 inches.

What size rim fits a 275/40R20 tire?

A 275/40R20 tire fits on a rim that is 20 inches in diameter.

What does the 40 in a 275/40R20 tire mean?

The 40 in a 275/40R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 40% of its width.

Alternative Tire Sizes for 275/40R20

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 275/40R20:

Tire SizeDiameterRim
245/45R2028.7″ (Equal)20 x 7.5-9.0
315/35R2028.7″ (Equal)20 x 10.5-12.5
145/80R2029.1″ (1.4%)20 x n/a
155/65R2027.9″ (-2.8%)20 x n/a
225/45R2028.0″ (-2.4%)20 x 8.0-9.5
235/45R2028.3″ (-1.4%)20 x 7.5-9.0
235/50R2029.3″ (2.1%)20 x 6.5-8.5
255/40R2028.0″ (-2.4%)20 x 8.5-10.0
255/45R2029.0″ (1.0%)20 x 8.0-9.5
265/40R2028.3″ (-1.4%)20 x 9.0-10.5
265/45R2029.4″ (2.4%)20 x 8.5-10.0
285/35R2027.9″ (-2.8%)20 x 9.5-11.0
285/40R2029.0″ (1.0%)20 x 9.5-11.0
295/35R2028.1″ (-2.1%)20 x 10.0-11.5
295/40R2029.3″ (2.1%)20 x 10.0-11.5
305/35R2028.4″ (-1.0%)20 x 10.0-12.0
325/35R2029.0″ (1.0%)20 x 11.0-13.0
335/30R2027.9″ (-2.8%)20 x 11.5-12.5
345/30R2028.1″ (-2.1%)20 x 12.0-13.0