Tire Components and Characteristics

Front

What is the function of the tire bead?

Back

The bead is a rubber-coated steel cable that ensures the tire remains attached to the wheel rim.

Front

What are plies in a tire?

Back

Plies are several layers of fabric that make up the body of a tire. Polyester cord is the most popular ply fabric.

Front

What are cap plies?

Back

Cap plies are extra layers of polyester fabric in some tires, meant to hold everything together.

Front

What is the purpose of the tire belt?

Back

The belt is made of steel and provides reinforcement to the section directly underneath the tread.

Front

What is the tire tread made of?

Back

The tread is a mixture of various synthetic and natural rubbers.

Front

What are the functions of the tire sidewall?

Back

The tire sidewall provides lateral stability, prevents air from escaping, and protects the body plies.

Front

How does the aspect ratio of a tire affect its performance?

Back

A lower aspect ratio generally means higher performance due to better lateral stability.

Front

Why do tires with a lower profile have better cornering ability?

Back

They have stiffer and shorter sidewalls, which resist cornering forces better.