The bead cover is a layer of material that covers and reinforces the bead of the tire. The tire bead is the inner edge of the tire that seats onto the wheel rim. The bead cover, often made of high-strength steel wires embedded in rubber, helps ensure a secure and proper fit of the tire onto the wheel. It plays a crucial role in maintaining the structural integrity of the tire and preventing it from coming off the rim, especially during high-stress situations such as rapid acceleration, braking, or sharp turns.