A very common question we receive is “How do I know what kind of tire I am running?”
While there are a number of different size truck tires available today, the four most common sizes used are : 295/75R 22.5, 285/75R 24.5, 11R 22.5 and 11R 24.5
11R22.5
Commonly referred to as a “Tall 2”
11R24.5
Commonly referred to as a “Tall 4”
295/75R22.5
Commonly referred to as a “Low Pro 22.5 or Low 2”
285/75R24.5
Commonly referred to as a “Low Pro 24.5 or Low 4”
In order to determine the size you’re running, it’s beneficial to understand exactly how to read the sidewall of your tire. Check out the tire below.
Move your cursor over the blue markings to learn what each item means.
- DOT
The DOT tire identification number indicates compliance with all safety standards established by the U.S. Department of Transportation and provides additional information about the tire. It’s a series of letters and numbers. The last four numbers are the week and year the tire was made. - Load Index
The load index number corresponds to the maximum load-carrying capacity of the tire. - PSI
Recommended Cold Inflated Air Pressure - Diameter
The diameter is the size of the wheel from one side to the other. - Radial
Tires with an “R” indicate radial tire construction - Height
The aspect ratio indicates the dimensional relationship of the section height to the section width - Width
The width indicates the widest point of a tire from sidewall to sidewall. - Speed
Indicates maximum speed at the rated carrying capacity - Ply
Tire ply construction and weight capacity rating
Tire Mount
• Yellow Dot
Indicates the light point of the tire, line the yellow dot up with the heavy point on the wheel which is at the valve stem. This method provides the most balanced assembly.
Indicates the light point of the tire, line the yellow dot up with the heavy point on the wheel which is at the valve stem. This method provides the most balanced assembly.
• Red Dot
Indicates the high point of the tire. The tire can be mounted with the high point (red dot) 180 degrees off from the dimple located on the back side of the wheel’s outer flange which indicates the high point of the wheel. This method provides the most round assembly.
Indicates the high point of the tire. The tire can be mounted with the high point (red dot) 180 degrees off from the dimple located on the back side of the wheel’s outer flange which indicates the high point of the wheel. This method provides the most round assembly.
• Green Dot
(or any other colored dots)
Indicates the tire has passed inspection at the assembly plant, these inspection dots have no useful meaning for mounting.
(or any other colored dots)
Indicates the tire has passed inspection at the assembly plant, these inspection dots have no useful meaning for mounting.