135/80R12 in Inches

A 135/80R12 tire has a 20.5-inch diameter, a 5.3-inch width, and is designed for a 12-inch rim.

In high flotation terms, this tire is labeled as 20.5x5.3R12.

135/80R12 Tire Size
135/80R12 Tire Size in Inches
135/80R12 Tire Circumference
983.6 revs/mile

135/80R12 Tire Overview

20.5 inches
Wheel Diameter
12 inches
Tire Width
5.3 inches
64.4 inches
Sidewall Height
4.3 inches
983.6 per mile

What does 135/80R12 mean?

135/80R12 tire size meaning in inches

135/80R12 is a tire size with the following dimensions:

  • 135 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.
  • 80 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.
  • 12 is the diameter of the wheel in inches, on which the tire is to be mounted.

135/80R12 Tire Conversion

Tire Diameter20.5 in520.8 mm
Section Width5.3 in135 mm
Rim Height12 in304 mm
Sidewall Height4.3 in108 mm
Circumference64.4 in1636.1 mm
Revolutions983.6 revs/mile
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FAQ About 135/80R12 Tire

How tall is a 135/80R12 tire?

The height (or diameter) of a 135/80R12 tire is 20.5 inches

How wide is a 135/80R12 tire?

The width of a 135/80R12 tire is 135 mm, which is about 5.3 inches.

What size rim fits a 135/80R12 tire?

A 135/80R12 tire fits on a rim that is 12 inches in diameter.

What does the 80 in a 135/80R12 tire mean?

The 80 in a 135/80R12 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 80% of its width.

Alternative Tire Sizes for 135/80R12

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 135/80R12:

Tire SizeDiameterRim
155/70R1220.5″ (Equal)12 x 4.0-5.0
125/80R1219.9″ (-2.9%)12 x n/a
145/70R1220.0″ (-2.4%)12 x 3.5-5.0
145/80R1221.1″ (2.9%)12 x 3.5-5.0
165/70R1221.1″ (2.9%)12 x 4.0-5.5