225/40R14 in Inches

A 225/40R14 tire has a 21.1-inch diameter, a 8.9-inch width, and is designed for a 14-inch rim.

In high flotation terms, this tire is labeled as 21.1x8.9R14.

225/40R14 Tire Size
225/40R14 Tire Size in Inches
225/40R14 Tire Circumference
956.4 revs/mile

225/40R14 Tire Overview

21.1 inches
Wheel Diameter
14 inches
Tire Width
8.9 inches
66.2 inches
Sidewall Height
3.5 inches
956.4 per mile

What does 225/40R14 mean?

225/40R14 tire size meaning in inches

225/40R14 is a tire size with the following dimensions:

  • 225 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.
  • 14 is the diameter of the wheel in inches, on which the tire is to be mounted.

225/40R14 Tire Conversion

Tire Diameter21.1 in535.6 mm
Section Width8.9 in225 mm
Rim Height14 in355 mm
Sidewall Height3.5 in90 mm
Circumference66.2 in1682.6 mm
Revolutions956.4 revs/mile
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FAQ About 225/40R14 Tire

How tall is a 225/40R14 tire?

The height (or diameter) of a 225/40R14 tire is 21.1 inches

How wide is a 225/40R14 tire?

The width of a 225/40R14 tire is 225 mm, which is about 8.9 inches.

What size rim fits a 225/40R14 tire?

A 225/40R14 tire fits on a rim that is 14 inches in diameter.

What does the 40 in a 225/40R14 tire mean?

The 40 in a 225/40R14 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 40% of its width.

Alternative Tire Sizes for 225/40R14

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 225/40R14:

Tire SizeDiameterRim
165/55R1421.1″ (Equal)14 x 4.5-6.0
125/70R1420.9″ (-0.9%)14 x n/a
145/65R1421.4″ (1.4%)14 x 4.0-5.0
155/55R1420.7″ (-1.9%)14 x 4.5-5.5
165/50R1420.5″ (-2.8%)14 x n/a
175/50R1420.9″ (-0.9%)14 x 5.0-6.0
185/50R1421.3″ (0.9%)14 x 5.0-6.5
195/45R1420.9″ (-0.9%)14 x 6.0-7.5
205/45R1421.3″ (0.9%)14 x 6.5-7.5
215/40R1420.8″ (-1.4%)14 x 7.0-8.5
255/35R1421.0″ (-0.5%)14 x 8.5-10.0