215/40R15 in Inches

A 215/40R15 tire has a 21.8-inch diameter, a 8.5-inch width, and is designed for a 15-inch rim.

In high flotation terms, this tire is labeled as 21.8x8.5R15.

215/40R15 Tire Size
215/40R15 Tire Size in Inches
215/40R15 Tire Circumference
926.3 revs/mile

215/40R15 Tire Overview

21.8 inches
Wheel Diameter
15 inches
Tire Width
8.5 inches
68.4 inches
Sidewall Height
3.4 inches
926.3 per mile

What does 215/40R15 mean?

215/40R15 tire size meaning in inches

215/40R15 is a tire size with the following dimensions:

  • 215 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.
  • 15 is the diameter of the wheel in inches, on which the tire is to be mounted.

215/40R15 Tire Conversion

Tire Diameter21.8 in553 mm
Section Width8.5 in215 mm
Rim Height15 in381 mm
Sidewall Height3.4 in86 mm
Circumference68.4 in1737.3 mm
Revolutions926.3 revs/mile
Not the tire size you are searching for? Try our Tire Size Calculator.

FAQ About 215/40R15 Tire

How tall is a 215/40R15 tire?

The height (or diameter) of a 215/40R15 tire is 21.8 inches

How wide is a 215/40R15 tire?

The width of a 215/40R15 tire is 215 mm, which is about 8.5 inches.

What size rim fits a 215/40R15 tire?

A 215/40R15 tire fits on a rim that is 15 inches in diameter.

What does the 40 in a 215/40R15 tire mean?

The 40 in a 215/40R15 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 40% of its width.

Alternative Tire Sizes for 215/40R15

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 215/40R15:

Tire SizeDiameterRim
245/35R1521.8″ (Equal)15 x 8.0-9.5
115/70R1521.3″ (-2.3%)15 x n/a
125/70R1521.9″ (0.5%)15 x n/a
135/70R1522.4″ (2.8%)15 x n/a
145/65R1522.4″ (2.8%)15 x 4.0-5.0
155/60R1522.3″ (2.3%)15 x 4.5-5.5
165/50R1521.5″ (-1.4%)15 x 4.5-6.0
165/55R1522.1″ (1.4%)15 x 4.5-6.0
175/50R1521.9″ (0.5%)15 x 5.0-6.0
185/45R1521.6″ (-0.9%)15 x 6.0-7.0
185/50R1522.3″ (2.3%)15 x n/a
195/45R1521.9″ (0.5%)15 x 6.0-7.5
205/45R1522.3″ (2.3%)15 x 6.5-7.5