What is the bead of a tire?

The bead of a tire refers to the area that contacts the rim. This part of the tire is critical because it is designed to create an airtight seal with the rim, ensuring that the tire can hold air and maintain tire pressure. The bead typically consists of a steel wire encased in rubber, which allows it to fit snugly against the rim while withstanding the forces and pressure generated when the tire is inflated. This functionality is essential for overall tire performance, safety, and vehicle handling.

Understanding the role of the bead is vital for tire installation, as improper seating of the bead can lead to air leaks or tire failure. A secure bead helps to keep the tire properly mounted on the wheel during operation, preventing issues that could arise from separation or loss of tire pressure.