what is a commercial tires
There’s a lot more knowleage to tires than you may think. like this way , did you know one tire included more than 200 raw materials? Or that cargo carriers and commercial vehilcle drivers can receive poor Compliance, Safety, Accountability (CSA) scores because of damaged tires? Check out the infographic below to learn more.
Tires are critical vehicle components because they connect trucks and trailers to the road and allow drivers to steer safely on diverse terrains. so the tires play with a very important role in vehicle operation, it can be beneficial for drivers to understand how to prevent wear and tear. Learn more about tire components and get helpful maintenance tips.
Knowleage of commercial tires
Standard radial tires consist of seven main layers. Each part works differently to enhance flexibility, durability, safety and fuel efficiency. The information below outlines where each layer is located and its purpose:
1. Inner liner
This makes up the innermost part of the tire and is composed of synthetic rubber. Its function is to hold high-pressure air inside so it can’t seep through the rubber structure.
2. Carcass ply
The carcass ply is directly above the inner liner and consists of textile fiber cords bonded into the rubber. This layer strengthens the tire, helps it resist pressure and determines the loading capacity.
The bead is the underlining edge of the tire that secures it to the rim. It’s composed of bead wire, steel and rubber, and works to keep the tire and rim fastened together in the event of sudden air pressure reduction.
The sidewall is located between the tread and the bead and has several functions. It keeps the carcass ply from receiving damage, protects the tire from rough impacts while driving and gives it flexibility.
The belt, also called the crown ply, is made of resistant steel cords bonded into the rubber. It’s located between the tread and carcass, and acts as a reinforcing layer to keep those parts connected.
6. Cap ply
This layer is directly underneath the tread and is made of polyester fabric that helps hold everything in place. Its function is to prevent the tires from overheating due to friction, and help them keep their shape at high speeds.
The tread is the outermost layer and contains a blend of natural and synthetic rubbers that help the tires resist heat. Because it makes direct contact with the road, it has the thickest rubber.
What the sidewall information means
Information such as the Tire Identification Number (TIN), ply material, and Tire Performance Criteria Specification (TPC Spec) are labeled on the sidewall. You can also find the tire size — a combination of numbers and letters that describe the:
Section width. A three-digit number that measures (in millimeters) the tire’s outermost most edge to its innermost edge.
Sidewall aspect ratio. This indicates the sidewall’s height from rim to tread as a percentage of the section width. For example, if the number is 70, that means the height is 70 percent of the tire’s width. The bigger the number, the taller the sidewall. The smaller the number, the shorter the sidewall.
Type of construction. There are two types of tire construction — radial and bias-ply. An uppercase R indicates radial tires. A tire labeled with an uppercase B or D represents bias-ply tires.
Rim diameter. The number indicating the size (in inches) of the wheel that fits the tire.
Service Description. The service description includes the load index and speed rating. The load index specifies the maximum carrying capacity of the tire. The speed rating indicates the top speed a properly installed tire can reach.
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