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The TREAD refers to the area of the tire in contact with the ground. This thick rubber contains heat-welded nylon cords and shredded wire. This compound is formulated to resist wear, abrasion, cutting, cracking and heat buildup.
The SIDEWALL is a rubber cover over the side of the carcass plies. Its purpose is to protect the cord plies. Along with extra sturdy sidewalls, this heavy tread protects the cord body from moisture, bruises, snags and cuts.
The CARCASS PLY consists of fabric cords between two layers of rubber. The most common fabric is nylon. Super strength of the aircraft tire is achieved by plies of nylon cord imbedded in rubber with each layer directionally angled to assure balance. Reinforced by additional fabric breakers between the tread and core body, this compact construction distributes shock and impact over a wider area giving the tire greater strength and protection under the heavy duty tread.
The CARCASS PLIES in an aircraft tire extend from bead to bead, meaning there are as many plies in the sidewall as in the tread.
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