| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire which is improved in noise reduction performance exhibited by a resonator.SOLUTION: In a pneumatic tire, there are arranged: an air chamber in which at least two circumferential grooves extending to a tread circumferential direction while continuing thereto on a tread stepping surface, and which is opened at a land part surface in a position apart from the circumferential grooves in a lard part which is defined between the two circumferential grooves different in cross seconds out of the circumferential grooves; and a resonator having one or more one-side narrowed necks which make the air chamber communicate with one circumferential groove out of the two circumferential grooves, and one or more other-side narrowed necks which make the air chamber communicate with the other circumferential groove. The one-side narrowed neck and the other side narrowed neck are substantially the same with each other in cross sections, an extension length of the one-side narrowed neck is longer than an extension length of the other side narrowed neck, the one-side narrowed neck is opened at on circumferential groove which is relatively large in the cross section, and the other side narrowed neck is opened at the other circumferential groove which is relatively small in the cross section.</p> |
