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1. (WO2018128132) PNEUMATIC TIRE FOR TWO-WHEELED MOTOR VEHICLES

Pub. No.:    WO/2018/128132    International Application No.:    PCT/JP2017/046739
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Wed Dec 27 00:59:59 CET 2017
IPC: B60C 9/06
B60C 15/00
B60C 15/04
B60C 15/06
Applicants: BRIDGESTONE CORPORATION
株式会社ブリヂストン
Inventors: TOKITOH Yasufumi
時任 泰史
Title: PNEUMATIC TIRE FOR TWO-WHEELED MOTOR VEHICLES
Abstract:
Provided is a pneumatic tire for two-wheeled motor vehicles, having improved durability of a bead portion than in the prior art. The pneumatic tire comprises: a tread portion formed in an annular shape; a sidewall portion and bead portion contiguous with both edges of the tread portion; a carcass 1 comprising at least three carcass plies 1a, 1b, 1c which extend in a toroidal shape towards the inside of the tread portion in the radial direction of the tire, a belt 2 comprising at least two belt layers 2a, 2b on the outside of the carcass 1 in the radial direction of the tire, and a bead core 3 embedded within the bead portion. The carcass plies 1a, 1b, 1c have a bias structure, and carcass plies 1a, 1b, 1c have at least two turn-up carcass plies 1a, 1b formed by folding around the bead core 3, and at least one down carcass ply 1c positioned on the outside of the turn-up carcass plies in the radial direction of the tire, not folded around the bead core 3, and terminating on the outside of the bead portion in the radial direction of the tire.