To improve the durability of a bead section by effectively restraining the fatigue failure of layer line in a layer whose turning direction is opposite.

Where layers 32 whose turning direction of layer lines 33 is opposite to each other are arranged adjacent to each other in a bead core, when this bend core is twisted, the layer lines 33 of both layer 32 are deformed, resulting in being repeatedly rubbed with each other due to direct contact. Such direct contact is prevented by arranging cushion rubber layers 35 between the layers 32, and the contact pressure caused by such contact is damped.