What is the function of the beads in a tire?

The answer highlights the essential function of tire beads, which are critical components in ensuring that the tire remains securely mounted on the wheel rim. Tire beads are composed of strong materials, typically steel or fabric, that are embedded within the tire's rubber structure. Their primary job is to create an airtight seal between the tire and the rim, which is crucial for maintaining air pressure within the tire. This secure fit prevents the tire from slipping off the rim during various driving conditions, particularly while cornering or when encountering bumps. A proper bead seating is vital for safety, performance, and overall handling of the vehicle.

While aesthetically pleasing tires may have stylish designs, the beads do not serve that decorative purpose. Similarly, while enhancing grip on wet surfaces and reducing rolling resistance are important attributes of tire design, those aspects are attributed to the tread pattern and rubber compounds used in the tire rather than the function of the beads themselves.