185/55R15 in Inches

A 185/55R15 tire has a 23-inch diameter, a 7.3-inch width, and is designed for a 15-inch rim.

In high flotation terms, this tire is labeled as 23x7.3R15.

185/55R15 Tire Size
7.3"
23"
185/55R15 Tire Size in Inches
185/55R15 Tire Circumference
72.3"
15"
4"
876.4 revs/mile

185/55R15 Tire Overview

Height
23 inches
Wheel Diameter
15 inches
Tire Width
7.3 inches
Circumference
72.3 inches
Sidewall Height
4 inches
Revolutions
876.4 per mile
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What does 185/55R15 mean?

185/55R15 tire size meaning in inches

185/55R15 is a tire size with the following dimensions:

  • 185 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.
  • 55 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.

185/55R15 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter23 in584.5 mm
Section Width7.3 in185 mm
Rim Height15 in381 mm
Sidewall Height4 in101.8 mm
Circumference72.3 in1836.3 mm
Revolutions876.4 revs/mile
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FAQ About 185/55R15 Tire

How tall is a 185/55R15 tire?

The height (or diameter) of a 185/55R15 tire is 23 inches

How wide is a 185/55R15 tire?

The width of a 185/55R15 tire is 185 mm, which is about 7.3 inches.

What size rim fits a 185/55R15 tire?

A 185/55R15 tire fits on a rim that is 15 inches in diameter.

What does the 55 in a 185/55R15 tire mean?

The 55 in a 185/55R15 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 55% of its width.

Alternative Tire Sizes for 185/55R15

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 185/55R15:

Tire SizeDiameterRim
225/45R1523.0″ (Equal)15 x 7.0-8.5
125/80R1522.9″ (-0.4%)15 x n/a
135/70R1522.4″ (-2.6%)15 x n/a
135/80R1523.5″ (2.2%)15 x 3.5-4.5
145/65R1522.4″ (-2.6%)15 x 4.0-5.0
155/65R1522.9″ (-0.4%)15 x 4.5-5.5
155/70R1523.5″ (2.2%)15 x 4.0-5.0
165/60R1522.8″ (-0.9%)15 x 5.0-6.0
165/65R1523.4″ (1.7%)15 x 4.5-6.0
175/55R1522.6″ (-1.7%)15 x 5.0-6.0
175/60R1523.3″ (1.3%)15 x 5.0-6.0
195/50R1522.7″ (-1.3%)15 x 5.5-7.0
195/55R1523.4″ (1.7%)15 x 5.5-7.0
205/50R1523.1″ (0.4%)15 x 5.5-7.5
215/45R1522.6″ (-1.7%)15 x 7.0-8.0
215/50R1523.5″ (2.2%)15 x 6.0-7.5
235/45R1523.3″ (1.3%)15 x 7.5-9.0
245/40R1522.7″ (-1.3%)15 x 8.0-9.5
275/35R1522.6″ (-1.7%)15 x 9.0-11.0
295/35R1523.1″ (0.4%)15 x n/a