Bead chafer, a material in the bead area of the tire intended to protect the carcass against chafing or abrasion by the wheel rim and against abrasion from the steel bead wires. It also helps to stiffen the bead.
This disambiguation page lists articles associated with the title Chafer. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.