| 摘要 |
PURPOSE:To improve a coefficient of wet friction by forming an axial sipe on the preceding part of a block, connecting the succeeding part to the preceding part through a thin groove extending axially and forming a rounded part in the intersection of a side facing the thin groove and radial outside face. CONSTITUTION:A preceding part 3 previously contacting the ground in the rotation of a tire in the direction of arrow is formed with a plurality of axial sipes 6, and a succeeding part 4 is connected to the preceding part 3 through a thin groove 7 to form a block. The succeeding part 4 is formed on the preceding part 3 side, i.e., the front end edge with a rounded part 8. The blocks similarly constituted are formed circumferentially outside these blocks 5 through a circumferential groove. |
