| 摘要 |
<P>PROBLEM TO BE SOLVED: To providing a pneumatic tire that strikes a balance between a runflat durability and riding comfort more highly. <P>SOLUTION: One or both of the side reinforcing rubber layer 4 and a bead filler 5 is a rubber composition which contains a filler of ≤50 pts.mass relative to a rubber component of 100 pts.mass and in which a dynamic storing elasticity E' as vulcanized rubber property at 1% of dynamic strain and 25°C is ≥100 MPa and a Σ value of loss tangent tan δ at 28 to 150°C is ≤5.0, polyester fiber cords are used in a carcass ply or a reinforcing layer 8 arranged at least one parts in an area A from the end of a belt layer 3 to the maximum width part of the tire side and an area B from the vicinity of a bead core 1 to a bead filler 5 such that the cord angle to the tire radial direction becomes 0 to 85° in the pneumatic tire. <P>COPYRIGHT: (C)2012,JPO&INPIT |
