| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire, improved in durability and workability during manufacture and providing excellent controllability and riding comfort, by improving the bead filler rubber composition. SOLUTION: The bead filler rubber composition is prepared by adding a master batch, in which a thermoplastic polyamide is dispersed fiber-wise in the matrix comprising a polyolefin and an elastomer with 1-8 pts.wt. of the polyamide fiber component, and a carbon blend system comprising 30-70 pts.wt. of hard carbon and 10-50 pts.wt. of soft carbon is added to 100 pts.wt. of the material rubber.
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