| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire reducing columnar resonance sound caused by a circumferential groove at a wide frequency band area. SOLUTION: The pneumatic tire is provided with: at least one circumferential groove extending along a tread circumferential line; and a branch groove separated/extended from the circumferential group on a tread surface of a tire. In the branch groove, a plurality of arrangements where a branch groove part and an air chamber part having a larger cross section than a cross section of the branch groove part are aligned in the order from the circumferential groove side, are continued. COPYRIGHT: (C)2009,JPO&INPIT |
