| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of reducing the rolling resistance. <P>SOLUTION: In the pneumatic tire, a belt layer is laminated on an outer circumference of a carcass 11, and a tread part consisting of a tread rubber is arranged on an outer circumference of the belt layer. The belt layer is constituted of three layers of steel belts having a steel cord. A first belt 21 forming an inner circumferential layer and a second belt 22 forming an intermediate layer are arranged so that the direction a steel cord 21A of the first belt 21 and the direction of a steel cord 22A of the second belt 22 are across each other, and inclined with respect to the tire width direction W, and a third belt 23 forming an outer circumferential layer is arranged so that the direction of a steel cord 23A of the third belt 23 is along the tire width direction W. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
