255/55R19 (original) (raw)
255/55R19
255/55R19 Tire Size in Inches and Millimeters
255/55R19 tires have a diameter of 30" (763 mm), a tread width of 10" (255 mm), and a wheel diameter of 19" (482.6 mm).The sidewall of the tire is 5.5" (140 mm), and the tire's circumference is 94.2" (2395.8 mm). This means a 255/55R19 tire will make make 673 revolutions per mile, or 417 revolutions per kilometer.
| Spec | Inches | Metric |
|---|---|---|
| Diameter | 30" | 763 mm |
| Width | 10" | 255 mm |
| Wheel | 19" | 482.6 mm |
| Sidewall | 5.5" | 140 mm |
| Circum | 94.2" | 2395.8 mm |
| Revolutions | 673 per mile | 417 per km |
What Does 255/55R19 Mean?
The tire size 255/55R19 is a common size used on many trucks, SUVs, and other larger vehicles.
Here is what each part of the size designation represents:
- 255: This number represents the width of the tire in millimeters. In this case, the tire is 255 millimeters wide.
- 55: This number represents the aspect ratio of the tire, which is the height of the tire's sidewall as a percentage of its width. In this case, the sidewall height is 55% of the tire's width.
- R: This letter indicates the tire's construction type. “R” stands for radial construction, which is the most common type of tire construction today.
- 19: This number represents the diameter of the wheel that the tire is designed to fit on, in inches. In this case, the tire is designed to fit on a 19-inch wheel.
How To Convert 255/55R19 Into Inches
The 255/55R19 conversion is fairly simple. The first number in the tire size, 255, represents the width of the tire in millimeters. To convert this to inches, we divide 255 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 10 inches.
The second number in the tire size, 55, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 10 by 0.55, which gives us approximately 5.5 inches.
Finally, the last number in the tire size, 19, represents the diameter of the wheel rim in inches. Therefore, the tire size 255/55R19 can be expressed in inches as roughly 10 inches wide, 5.5 inches tall, and designed to fit a 19-inch wheel rim.
Frequently Asked Questions About 255/55R19 Tires
How tall is a 255/55R19 tire?
A 255/55R19 tire has an approximate height, also known as the overall diameter, of 30 inches (763 mm). This height can vary slightly depending on the brand and model of the tire, as well as the amount of air pressure in the tire.
How wide is a 255/55R19 tire?
A 255/55R19 tire has a width of approximately 10 inches (255 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “255”. It’s important to note that the actual width of the tire may vary slightly depending on the brand and model of the tire, and the width may also be affected by the amount of air pressure in the tire.
Alternate 255/55R19 Replacement Tire Sizes
Upsizing your wheels or tires? Replacement tires must be within 3% of the diametor of the original tire. The following sizes fall within that range - click on any size to see detailed info about that tire and wheel combination.