| 摘要 |
PURPOSE:To propose a pneumatic tire whose weight can be reduced while keeping rupture strength of bead cores. CONSTITUTION:In a pneumatic tire having a pair of bead cores which fasten end parts of both sides of a toroidal carcass 2, the bead cores are provided with bead core wire groups 13 comprising a plurality of lines and steps of bead core wires and annular holding frames 103 arranged inside of the tire radial direction of the core wire groups and holding the core wire groups. |
