What does 185/55R13 mean?
185/55R13 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.
- 13 is the diameter of the wheel in inches, on which the tire is to be mounted.
185/55R13 Tire Conversion
| Dimensions | Inches | Millimeters |
| Tire Diameter | 21 in | 533.7 mm |
| Section Width | 7.3 in | 185 mm |
| Rim Height | 13 in | 330 mm |
| Sidewall Height | 4 in | 101.8 mm |
| Circumference | 66 in | 1676.7 mm |
| Revolutions | 959.8 revs/mile | |
Not the tire size you are searching for? Try our Tire Size Calculator.
FAQ About 185/55R13 Tire
How tall is a 185/55R13 tire?
The height (or diameter) of a 185/55R13 tire is 21 inches
How wide is a 185/55R13 tire?
The width of a 185/55R13 tire is 185 mm, which is about 7.3 inches.
What size rim fits a 185/55R13 tire?
A 185/55R13 tire fits on a rim that is 13 inches in diameter.
What does the 55 in a 185/55R13 tire mean?
The 55 in a 185/55R13 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 55% of its width.
Alternative Tire Sizes for 185/55R13
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 185/55R13:
| Tire Size | Diameter | Rim |
|---|---|---|
| 145/70R13 | 21.0″ (Equal) | 13 x 3.5-5.0 |
| 225/45R13 | 21.0″ (Equal) | 13 x 7.0-8.5 |
| 255/40R13 | 21.0″ (Equal) | 13 x n/a |
| 125/80R13 | 20.9″ (-0.5%) | 13 x 3.0-4.0 |
| 135/70R13 | 20.4″ (-2.9%) | 13 x 3.5-4.5 |
| 135/80R13 | 21.5″ (2.4%) | 13 x 3.5-4.5 |
| 145/65R13 | 20.4″ (-2.9%) | 13 x n/a |
| 155/65R13 | 20.9″ (-0.5%) | 13 x 4.5-5.5 |
| 155/70R13 | 21.5″ (2.4%) | 13 x 4.0-5.0 |
| 165/60R13 | 20.8″ (-1.0%) | 13 x 4.5-6.0 |
| 165/65R13 | 21.4″ (1.9%) | 13 x 4.5-6.0 |
| 175/55R13 | 20.6″ (-1.9%) | 13 x 5.0-6.0 |
| 175/60R13 | 21.3″ (1.4%) | 13 x 5.0-6.0 |
| 195/55R13 | 21.4″ (1.9%) | 13 x 5.5-7.0 |
| 205/50R13 | 21.1″ (0.5%) | 13 x 5.5-7.5 |
| 215/50R13 | 21.5″ (2.4%) | 13 x 5.5-8.5 |