Glossary
Cord
The reinforcing fiber material — typically steel wire, nylon, polyester, or aramid — used to construct the structural layers of a tire. Exposed cord in the tread or sidewall is a serious defect and an out-of-service condition. The "cord" is what provides structural strength in the casing; once it is exposed, the tire's structural integrity is compromised.
Real-World Use
A tire showing a bright metallic area in the inner sidewall during a dual inspection has wire cords exposed from a prior impact — it is removed before dispatch.
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.