| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire which can simultaneously improve noise performance and stability on a dry road when adopting pitch variations for a tread pattern.SOLUTION: In a pneumatic tire, a plurality of repetition elements including lateral grooves 51, 61 at an inner vehicle area Ain and an outer vehicle area Aout are repeatedly formed in a circumferential direction of the tire. These repetition elements are constituted by pitch variations including at least three sorts of pitches. When the number of the pitch variation is N, a groove area ratio of each repetition element at the inner vehicle region is Si(1)-Si(N) in order from longer pitches, Si(1)≤Si(2)≤...≤Si(N-1)≤Si(N) and Si(1)<Si(N) are satisfied. When a groove area ratio of each repetition element at the outer vehicle region is So(1)-So(N) in order from longer pitches, So(1)≥So(2)≥...≥So(N-1)≥So(N) and So(1)>So(N) are satisfied. |
