| 摘要 |
PROBLEM TO BE SOLVED: To obtain a pneumatic tire making a leg portion of a supporting element hard to fall onto a drop portion during run-flat traveling. SOLUTION: The width of a radially inside part of a tire bead portion 24 is formed to be narrow. A relationship between the width (a) of a bead base, the width (b) of a radially inner end portion of the leg portion 28, and the width (c) of a bead seat is made to be c>a+b. Although a load is applied on the supporting element 12 during run-flat traveling, and axial force is applied on the leg portion 28 of the supporting element 12, the radially inside end portion of the leg portion 28 is disposed to fit in the bead seat 16B with a tire bead portion 25 without projecting out therefrom. Therefore, the leg portion 28 is certainly supported by the bead seat 16B, and the leg portion 28 becomes hard to fall onto the drop portion 16D. COPYRIGHT: (C)2008,JPO&INPIT
|
