155/65R20 in Inches

A 155/65R20 tire has a 27.9-inch diameter, a 6.1-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 27.9x6.1R20.

155/65R20 Tire Size
155/65R20 Tire Size in Inches
155/65R20 Tire Circumference
722 revs/mile

155/65R20 Tire Overview

27.9 inches
Wheel Diameter
20 inches
Tire Width
6.1 inches
87.8 inches
Sidewall Height
4 inches
722 per mile

What does 155/65R20 mean?

155/65R20 tire size meaning in inches

155/65R20 is a tire size with the following dimensions:

  • 155 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.
  • 65 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.

155/65R20 Tire Conversion

Tire Diameter27.9 in709.5 mm
Section Width6.1 in155 mm
Rim Height20 in508 mm
Sidewall Height4 in100.8 mm
Circumference87.8 in2229 mm
Revolutions722 revs/mile
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FAQ About 155/65R20 Tire

How tall is a 155/65R20 tire?

The height (or diameter) of a 155/65R20 tire is 27.9 inches

How wide is a 155/65R20 tire?

The width of a 155/65R20 tire is 155 mm, which is about 6.1 inches.

What size rim fits a 155/65R20 tire?

A 155/65R20 tire fits on a rim that is 20 inches in diameter.

What does the 65 in a 155/65R20 tire mean?

The 65 in a 155/65R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 65% of its width.

Alternative Tire Sizes for 155/65R20

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 155/65R20:

Tire SizeDiameterRim
285/35R2027.9″ (Equal)20 x 9.5-11.0
335/30R2027.9″ (Equal)20 x 11.5-12.5
145/65R2027.4″ (-1.8%)20 x n/a
155/60R2027.3″ (-2.2%)20 x 4.5-5.5
165/60R2027.8″ (-0.4%)20 x n/a
175/55R2027.6″ (-1.1%)20 x 5.0-6.0
195/50R2027.7″ (-0.7%)20 x 5.5-7.0
215/45R2027.6″ (-1.1%)20 x 7.0-8.0
225/40R2027.1″ (-2.9%)20 x 7.5-9.0
225/45R2028.0″ (0.4%)20 x 8.0-9.5
235/40R2027.4″ (-1.8%)20 x 8.0-9.5
235/45R2028.3″ (1.4%)20 x 7.5-9.0
245/40R2027.7″ (-0.7%)20 x 8.0-9.5
245/45R2028.7″ (2.9%)20 x 7.5-9.0
255/40R2028.0″ (0.4%)20 x 8.5-10.0
265/35R2027.3″ (-2.2%)20 x 9.0-10.5
265/40R2028.3″ (1.4%)20 x 9.0-10.5
275/35R2027.6″ (-1.1%)20 x 9.0-11.0
275/40R2028.7″ (2.9%)20 x 9.0-11.0
295/35R2028.1″ (0.7%)20 x 10.0-11.5
305/30R2027.2″ (-2.5%)20 x 10.5-11.5
305/35R2028.4″ (1.8%)20 x 10.0-12.0
315/30R2027.4″ (-1.8%)20 x 10.5-11.5
315/35R2028.7″ (2.9%)20 x 10.5-12.5
325/30R2027.7″ (-0.7%)20 x 11.0-12.0
345/30R2028.1″ (0.7%)20 x 12.0-13.0