| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tire that can control the central wear while securing the durability such as the high-speed durability. <P>SOLUTION: The tire includes: a tread rubber layer that has a contact area grounded to a road surface; at least one belt layer disposed to the tire radial direction inside of the tread rubber layer; and a plurality of belt reinforcing layers disposed between the belt layer and the tread rubber layer. In the tire, within the plurality of belt reinforcing layers, an outmost belt reinforcing layer is disposed at the outermost of the tire radial direction. The outmost belt reinforcing layer includes: a center reinforcing layer disposed at a central region that locates at a center in the tread width direction; and an outer end reinforcing layer disposed to the outer region which is outer side than the central region in the tread width direction where the end part of the belt layer is located. The center reinforcing layer is formed with the organic fiber cord and the rubber member, and the outer end reinforcing layer is formed only with the rubber member whose loss factor tan δ of 60°C is 0.05 or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
