Glossary
Bead
The reinforced edge of a tire that seals against the wheel rim flange and holds the tire in position. The bead is constructed of high-tensile steel wire bundled in rubber. Bead damage — from curb impact, mounting errors, or running flat — can compromise the seal and may not be repairable.
Real-World Use
A tire mounted after a flat-towing incident shows a slow bead leak — the bead was deformed during the flat-run, preventing a complete seal against the rim.
What to Pair It With
Read this term with the full tire sidewall, vehicle rating information, manufacturer documentation, and the actual condition of the tire.
This site is for general information only. It does not replace professional tire service, DOT compliance advice, tire manufacturer instructions, vehicle manufacturer recommendations, or fleet policy.