Sughrue, Mion, Zinn, Macpeak & Seas
Heavy duty pneumatic radial tire
 A heavy duty pneumatic radial tire having a high resistance against separation of belt end portion and separation of turn-up end of carcass ply in the beak portion is disclosed. This tire has a particularly limited carcass line defined by (1) the height of the intersecting point of a radial line, which contacts with the carcass in the inside of the bead core, with the carcass from a base line, which passes through the center of the bead core in a direction parallel to the rotation axis of the tire, (2) the maximum width of the carcass, (3) the vertical distance of the maximum width point of the carcass from the base line, and (4) the distance of the maximum width point of the carcass from the radial line. 
Bridgestone Tire Co., Ltd.
B Y
B60C Y10T
inventional additional
Kenji Yasuo
Matsumoto Suzuki