What does 255/45R19 mean?
255/45R19 is a tire size with the following dimensions:
- 255 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.
- 45 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.
- 19 is the diameter of the wheel in inches, on which the tire is to be mounted.
255/45R19 Tire Conversion
| Dimensions | Inches | Millimeters |
| Tire Diameter | 28 in | 712.1 mm |
| Section Width | 10 in | 255 mm |
| Rim Height | 19 in | 482 mm |
| Sidewall Height | 4.5 in | 114.8 mm |
| Circumference | 88.1 in | 2237.1 mm |
| Revolutions | 719.4 revs/mile | |
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FAQ About 255/45R19 Tire
How tall is a 255/45R19 tire?
The height (or diameter) of a 255/45R19 tire is 28 inches
How wide is a 255/45R19 tire?
The width of a 255/45R19 tire is 255 mm, which is about 10 inches.
What size rim fits a 255/45R19 tire?
A 255/45R19 tire fits on a rim that is 19 inches in diameter.
What does the 45 in a 255/45R19 tire mean?
The 45 in a 255/45R19 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 45% of its width.
Alternative Tire Sizes for 255/45R19
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 255/45R19:
| Tire Size | Diameter | Rim |
|---|---|---|
| 285/40R19 | 28.0″ (Equal) | 19 x 9.5-11.0 |
| 145/80R19 | 28.1″ (0.4%) | 19 x n/a |
| 155/70R19 | 27.5″ (-1.8%) | 19 x 4.0-5.0 |
| 155/80R19 | 28.8″ (2.9%) | 19 x n/a |
| 175/60R19 | 27.3″ (-2.5%) | 19 x 5.0-6.0 |
| 215/50R19 | 27.5″ (-1.8%) | 19 x 6.0-7.5 |
| 225/55R19 | 28.7″ (2.5%) | 19 x 6.0-8.0 |
| 235/45R19 | 27.3″ (-2.5%) | 19 x 7.5-9.0 |
| 235/50R19 | 28.3″ (1.1%) | 19 x 6.5-8.5 |
| 245/45R19 | 27.7″ (-1.1%) | 19 x 7.5-9.0 |
| 245/50R19 | 28.6″ (2.1%) | 19 x 7.0-8.5 |
| 265/40R19 | 27.3″ (-2.5%) | 19 x 9.0-10.5 |
| 265/45R19 | 28.4″ (1.4%) | 19 x 8.5-10.0 |
| 275/40R19 | 27.7″ (-1.1%) | 19 x 9.0-11.0 |
| 275/45R19 | 28.7″ (2.5%) | 19 x 8.5-10.5 |
| 295/40R19 | 28.3″ (1.1%) | 19 x 10.0-11.5 |
| 305/35R19 | 27.4″ (-2.1%) | 19 x 10.0-12.0 |
| 315/35R19 | 27.7″ (-1.1%) | 19 x n/a |
| 345/35R19 | 28.5″ (1.8%) | 19 x 11.5-13.5 |
| 355/30R19 | 27.4″ (-2.1%) | 19 x 12.0-13.0 |