| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire having high run flat durability and low rolling resistance. SOLUTION: The pneumatic tire comprises a carcass 4 having a pair of bead parts 1 and a pair of side wall parts 2, and a tread part 3 continuous to both side wall parts 2 and extending toroidally between the pair of bead parts 1 to reinforce these parts, a bead filler 7 arranged on the outer side in the tire radial direction of a bead core 6 embedded in the bead parts 1, respectively, and a pair of side reinforcing rubber layers 8 arranged on the side wall parts 2. A rubber composition with 1-60 pts.mass of low molecular weight conjugated diene polymer (B) having the weight average molecular weight (Mw) of 2,000-500,000 blended in 100 pts.mass of rubber component (A) consisting of a natural rubber and/or a synthesized diene rubber is used for at least one of the bead filler 7 and the side reinforcing rubber layers 8. COPYRIGHT: (C)2008,JPO&INPIT
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