| 摘要 |
<p>PROBLEM TO BE SOLVED: To attain improved ride comfort and weight reduction while ensuring required run flat performance and rim out-of-position resistance. SOLUTION: This run flat tire includes a reinforcing rubber layer 11 at a side wall section 3. In a bead core 5, a roughly triangular cross section whose base is the wire train R1 at the bottom stage is formed by reducing the number N of wires of a wire train R from the wire train R1 at the bottom stage toward the one at the top stage. Thus, bead apex rubber 8 can be eliminated, or a radial height H1 from a bead core outer end 5E of the bead apex rubber 8 can be reduced to 10 mm or less.</p> |
