| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve driving stability and to suppress heel and toe abrasion while maintaining the low pattern noise in a pneumatic tire. <P>SOLUTION: A tread part of the pneumatic tire includes a shoulder side pattern region in which a plurality of pitch variations having different pitch length are dispersed in a tire circumferential direction by a first pitch array, and a center side pattern region in which a plurality of pitch variations having different pitch length are dispersed in the tire circumferential direction by a second pitch array while having a circumferential groove as a boundary. When the plurality of pitch variations are arranged in order of the pitch length and the pitch variations adjacent with each other are defined as adjacent pitch variations, the first pitch array has the same pitch variation or the adjacent pitch variation in the pitch adjacent in the tire circumferential direction, and the second pitch array has a part having a pitch variation other than the adjacent pitch variation in the pitch adjacent in the tire circumferential direction, and the pitch variations of the shortest pitch length are continuously adjacent in the number of three or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
