HEAVY-DUTY PNEUMATIC TIRE

摘要

A heavy-duty pneumatic tire includes a tread, a pair of sidewalls extending from edges of the tread, respectively, a pair of beads extending along the pair of side walls, respectively, a carcass bridging between the pair of beads, and a belt positioned on a radially inner side of the tread and a radially outer side of the carcass and including plies laminated in a tire radial direction, each of the plies having cords arranged in parallel and a topping rubber. Each of the cords has a 1×4 single-strand structure and satisfies 0.090≦A≦0.112 and 1550N≦E≦1750N, where A represents a ratio F/E, F represents flexural rigidity, and E represents tensile strength per cord.

主权项

1. A heavy-duty pneumatic tire, comprising:
a tread; a pair of sidewalls extending from edges of the tread, respectively; a pair of beads extending along the pair of side walls, respectively; a carcass bridging between the pair of beads; and a belt positioned on a radially inner side of the tread and a radially outer side of the carcass and comprising a plurality of plies laminated in a tire radial direction, each of the plies having a plurality of cords arranged in parallel and a topping rubber, wherein each of the cords has a 1×4 single-strand structure and satisfies 0.090≦A≦0.112 and 1550N≦E≦1750N, where A represents a ratio F/E, F represents flexural rigidity, and E represents tensile strength per cord.