145/70R12 in Inches

A 145/70R12 tire has a 20-inch diameter, a 5.7-inch width, and is designed for a 12-inch rim.

In high flotation terms, this tire is labeled as 20x5.7R12.

145/70R12 Tire Size
145/70R12 Tire Size in Inches
145/70R12 Tire Circumference
1008.8 revs/mile

145/70R12 Tire Overview

20 inches
Wheel Diameter
12 inches
Tire Width
5.7 inches
62.8 inches
Sidewall Height
4 inches
1008.8 per mile

What does 145/70R12 mean?

145/70R12 tire size meaning in inches

145/70R12 is a tire size with the following dimensions:

  • 145 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.
  • 70 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.

145/70R12 Tire Conversion

Tire Diameter20 in507.8 mm
Section Width5.7 in145 mm
Rim Height12 in304 mm
Sidewall Height4 in101.5 mm
Circumference62.8 in1595.3 mm
Revolutions1008.8 revs/mile
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FAQ About 145/70R12 Tire

How tall is a 145/70R12 tire?

The height (or diameter) of a 145/70R12 tire is 20 inches

How wide is a 145/70R12 tire?

The width of a 145/70R12 tire is 145 mm, which is about 5.7 inches.

What size rim fits a 145/70R12 tire?

A 145/70R12 tire fits on a rim that is 12 inches in diameter.

What does the 70 in a 145/70R12 tire mean?

The 70 in a 145/70R12 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 70% of its width.

Alternative Tire Sizes for 145/70R12

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 145/70R12:

Tire SizeDiameterRim
125/80R1219.9″ (-0.5%)12 x n/a
135/80R1220.5″ (2.5%)12 x 3.5-4.5
155/70R1220.5″ (2.5%)12 x 4.0-5.0
165/60R1219.8″ (-1.0%)12 x 4.5-6.0