The tire bead is a critical component that secures the tire to the rim, preventing it from detaching during inflation and protecting the rubber from pressure damage. As such, it requires precise dimensions, flexibility, and strength. The performance of the bead is influenced by the material and layers, which impacts its usage. There are two main types: metal beads and fiber beads (Aramid beads).

Metal Beads: Typically used in lower-cost tires, metal beads are heavier and non-foldable. Once bent, they cannot return to their original shape, making it difficult for the bead to fully conform to the rim, increasing the risk of tire detachment.

Fiber Beads (Aramid Beads): Commonly found in high-end, tubeless tires, fiber beads are made from synthetic fibers or polymers, primarily using Aramid materials.

Compared to metal beads, fiber beads are more flexible and provide a better seal to the rim, ensuring a tighter fit and maintaining their conformity even when folded.