| 摘要 |
A collapsible tire for a motorized two-wheeled vehicle, containing a carcass reinforcement possibly surmounted radially from the outside by an inextensible crown reinforcement, itself radially on the inside of a tread, the reinforcements each containing at least one layer of reinforcing elements, the tread connected to two beads by two sidewalls, the beads intended to come into contact with a rim, each bead containing at least one circumferential reinforcing element called a bead wire, the bead wire defining a mean line forming a substantially circular closed curve in a circumferential plane. The bead wire is flexible and contains at least one concave part Pc of smaller radius Rc and of center of curvature Cc, and contains at least one unwrapped metal cord the carbon content of which is comprised between 0.5 and 0.9%. A method of collapsing the tire and to a use of the tire. |
