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Bias Belted Tire
Definition: A bias belted tire is a type of tire construction that combines the characteristics of both bias ply tires and radial tires. It incorporates bias plies along with a belt of steel or synthetic (rayon, nylon, or fiberglass) cords between the carcass and the tread.
Construction:
- Bias Plies: These are layers of fabric cords that run diagonally at angles typically between 30 to 40 degrees to the centerline of the tire.
- Belts: A belt of steel or synthetic cords is placed on top of the bias plies and wraps around the circumference of the tire. The cords in the belt overlap the bias plies and cross each other at bias angles.
Function and Benefits:
- Increased Strength: The additional belt provides enhanced strength and stability, reducing the amount of flex in the tread area.
- Improved Performance: This construction helps in improving traction and tread wear compared to traditional bias ply tires.
- Hybrid Characteristics: It combines the ride comfort of bias ply tires with some of the durability and handling benefits of radial tires.
Applications:
- Bias belted tires are commonly used in certain types of passenger vehicles and light trucks, offering a balance of comfort and performance.
Additional Context
- Bias Ply Tires: These are made entirely of plies that run diagonally from one bead to another, offering a smooth ride but less tread life.
- Radial Tires: These have plies running perpendicular to the direction of travel, with belts running circumferentially, offering better handling and longer tread life.
Bias belted tires aim to offer a middle ground between these two types, leveraging the strengths of both construction methods to enhance overall tire performance.
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