| 摘要 |
PROBLEM TO BE SOLVED: To improve travel noise performance and a travel speed resistance by having a specified initial elastic coefficient, generating specified stress under specified deformation, and having a potential of a high temperature contraction potential and less of a reinforcing body before the reinforcing body is built in the tires at the time of new tires, in a reinforcing body faced to the circumferential direction. SOLUTION: A tire 1 is composed of a crown 2 extended by two side walls 3 and two beads. The crown 2 has a carcass ply 4 and two reinforcing plies 5, 6 that are horizontal reinforcing bodies and are crossed with each other at about 30 degrees from a circumferential direction. It is also provided with a ply 7 composed of a spiral fabric reinforcing body. The fabric reinforcing body has an initial elastic coefficient smaller than 900 cN/tex, and stress larger than 12 cN/tex is generated under deformation of 3%. When tires are new, the reinforcing body has a potential of a high temperature contraction potential and less before the it is built in the tires. |
