305/60R20 in Inches

A 305/60R20 tire has a 34.4-inch diameter, a 12-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 34.4x12R20.

305/60R20 Tire Size
305/60R20 Tire Size in Inches
305/60R20 Tire Circumference
586.1 revs/mile

305/60R20 Tire Overview

34.4 inches
Wheel Diameter
20 inches
Tire Width
12 inches
108.1 inches
Sidewall Height
7.2 inches
586.1 per mile

What does 305/60R20 mean?

305/60R20 tire size meaning in inches

305/60R20 is a tire size with the following dimensions:

  • 305 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.
  • 20 is the diameter of the wheel in inches, on which the tire is to be mounted.

305/60R20 Tire Conversion

Tire Diameter34.4 in874 mm
Section Width12 in305 mm
Rim Height20 in508 mm
Sidewall Height7.2 in183 mm
Circumference108.1 in2745.8 mm
Revolutions586.1 revs/mile
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FAQ About 305/60R20 Tire

How tall is a 305/60R20 tire?

The height (or diameter) of a 305/60R20 tire is 34.4 inches

How wide is a 305/60R20 tire?

The width of a 305/60R20 tire is 305 mm, which is about 12 inches.

What size rim fits a 305/60R20 tire?

A 305/60R20 tire fits on a rim that is 20 inches in diameter.

What does the 60 in a 305/60R20 tire mean?

The 60 in a 305/60R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 60% of its width.

Alternative Tire Sizes for 305/60R20

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 305/60R20:

Tire SizeDiameterRim
275/65R2034.1″ (-0.9%)20 x 7.0-9.5
285/60R2033.5″ (-2.6%)20 x 8.0-10.0
285/65R2034.6″ (0.6%)20 x 8.0-10.0
295/60R2033.9″ (-1.5%)20 x 8.0-10.0
295/65R2035.1″ (2.0%)20 x 8.0-10.0
315/60R2034.9″ (1.5%)20 x 8.5-11.0
325/60R2035.4″ (2.9%)20 x 9.0-10.0
335/55R2034.5″ (0.3%)20 x n/a
355/50R2034.0″ (-1.2%)20 x 10.0-11.5