| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic tire by which high frequency road noise near 1 kHz can be reduced by making mass difference in a shoulder area and a center area. <P>SOLUTION: A pneumatic tire has a belt ply 5a buried in a tread 3 and a carcass ply 4 running into an inner peripheral side of an end of the belt ply 5a via the sidewall 2 from a pair of bead portions 1 and divided in a tire width direction at the tread 3. A division width of the carcass ply 4 is equal to or more than 35% of a maximum width of the belt ply. An auxiliary ply 6 formed by arranging reinforcement cords extending at an angle within a range of ±20 degrees with respect to the tire width direction is arranged in such a manner as to overlap with the carcass ply 4 in an inner peripheral side of the end of the belt ply 5a and extend out to an inner side in the tire width direction than the division end 4a of the carcass ply 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
