| 摘要 |
PURPOSE:To reduce outside vehicle noise due to the vibration of a tire without changing the thickness and rubber quality, etc., of a tread rubber, and exerting effect on wet performance. CONSTITUTION:A tread part is divided into center and respective shoulder regions 8 and 9 by a. pair of two shoulder peripheral grooves 7 continuously extending in a tire peripheral direction, and the width of the center region 8 is made 30-50% of tread grounding width TW. Also 100-240 sipes 10 opening in the respective shoulder peripheral grooves 7 are formed at intervals in a tire peripheral direction, the direction of the respective sipes on the tread is made a direction same as the direction of the cord of the utmost outer layer belt layer to a tire equator surface X-X, and 50-80 lateral grooves 11 extending in a tire width direction are formed at intervals in a tire peripheral direction in the respective shoulder regions 9. |
