Heavy duty pneumatic radial tire having improved bead durability

摘要

PURPOSE: A radical tire for heavy loaded with improved bead durability is provided to prevent the destruction of a bead part, by inserting a carcass turning up a bead core into bead fillers and wrapping the bead fillers. CONSTITUTION: A radical tire for heavy loaded with improved bead durability contains the following characteristics: a bead filler(1) is divided into an upper bead filler(11), a middle bead filler(12), and a lower bead filler(11), and a carcass ply(3), which turns up a bead core(5), is inserted between the lower bead filler and the middle bead filler, and the end of the carcass wraps the outer face of the middle bead filler, so the durability of the bead part is improved.