| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire having improved on-ice/snow performance and wear resistance. SOLUTION: Main grooves 1 extending to a tire peripheral direction EE' and subsidiary grooves 2 extending to a tire cross direction FF' are provided in a treat surface M to form blocks 3. In each of the blocks 3, there are arranged a narrow region 5 held between two sipes 4, 4 as one set extending to the tire cross direction FF' and wider regions 6 located on both sides of the narrow region 5 via the sipes 4, 4. A recessed portion 7 extending to the tire cross direction FF' is formed in a central portion in the tire peripheral direction EE' of the narrow region 5, and portions 8, 8 excluding the recessed portion 7 in the narrow region 5 are flush with the wider regions 6. COPYRIGHT: (C)2005,JPO&NCIPI |
