| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic radial tire for a heavy load compatibly achieving tire uneven wear resistance and driving stability. <P>SOLUTION: This pneumatic radial tire for heavy load includes one or more belt reinforcing layers, two or more inclined belt layers and a tread in this order at the radial direction outside of a carcass toroidally stretching between a pair of bead portions. The width of a tire width direction of the belt reinforcing layer is 80% or more of a tread width TW, and the width of the tire width direction of at least one layer of the inclined belt layers is larger than the widths of the tire width direction of all the belt reinforcing layers. The tire includes two or more sipes extending in a tire peripheral direction at the radial direction inside of a tread end and at the radial direction outside of the inclined belt layer at the radial direction outermost side. Each of the sipes closes when the tire is assembled to a specified rim, specified internal pressure is filled and maximum load weight is loaded. <P>COPYRIGHT: (C)2013,JPO&INPIT |
