| 摘要 |
PURPOSE: Tread pattern structure of a tire for a vehicle is provided to have tread pattern characteristics needed in four seasons, and to meet dry, wet, and snow performance and meet even unpaved road performance. CONSTITUTION: In a block-pattern tire having a symmetrical-type tread(100) forming many kerfs(K1¯K5), the width(TW) of the tread is 120¯230mm. The ratio of the center block width(TW1) and the shoulder block width(TW2) is formed within about 45:55¯55:45. The ratio of the center block width and the shoulder block width is desirably maintained as 50:50. Second grooves(2) of a zigzag shape, with angles(a,b) and widths(B,C) around a central linear groove(1) are symmetrically formed to the tread. Third grooves(3) of a zigzag shape, with angles(c,d) in the crosswise direction of the tire are formed and thus, a main block is formed.
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