| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire which can secure higher drainage. SOLUTION: Wall surfaces 4A2 and 4B2 of tire rotating direction R side edge parts 4A1 and 4B1 of both blocks 4A and 4B at a crossing section C are formed into a curved surface which is an arc-shape when seen from the front surface. Then, main groove side wall surfaces 4A3 and 4B3 are formed in a manner to be expanded to the reverse rotating direction side. Tilting anglesθ1 andθ2 of tangents X1 and X2 which come into contact with the main groove side wall surfaces 4A3 and 4B3 of the blocks 4A and 4B to the tire circumferential direction T are set to be from 10°to 40°, and tilting anglesθ3 andθ4 of tangents X3 and X4 which come into contact with the wall surfaces 4A2 and 4B2 of the tire rotating direction R side edge parts 4A1 and 4B1 to the tire circumferential direction T are set to be from 40°to 90°. COPYRIGHT: (C)2005,JPO&NCIPI |
