| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire suppressing cracks generated in a sector division position of groove bottoms in circumferential main grooves in a tire tread part vulcanized and formed by a sectional mold, and in particular suitable for a heavy load. SOLUTION: In the pneumatic tire vulcanized and formed by the sectional mold comprising a plurality of sectors, bottomed-up parts 5 raised from the groove bottoms of the circumferential main grooves 2 and connected to both groove walls are formed backwards and forwards in the longitudinal direction sandwiching the sector division position X of the circumferential main grooves 2, 2 at least positioned in shoulder sides among the plurality of circumferential main grooves 2. COPYRIGHT: (C)2009,JPO&INPIT |
