PNEUMATIC TIRE

WIPO Patent Application WO/2022/176911

A1

According to the present invention, in a bead core: metal cords are formed in a plurality of rows and stacked in a plurality of rows, and are formed such that the levels-direction length is greater than the row length; the metal cords are set in two or more rows, except for the tire-radial-direction innermost end and the third and subsequent levels of the metal cords as counted from the tire-radial-direction outer end to the tire-radial-direction inner side; the length dimension of the bead core is set to be at least twice the maximum width dimension of the bead core; the center of mass of the bead core is positioned closer to the tire-radial-direction inner-end side of the bead core than the longitudinal-direction central portion of the bead core; the maximum-width portion of the bead core is positioned in the second and subsequent levels of the metal cords as counted from the tire-radial-direction inner end of the bead core to the tire-radial-direction outer side thereof; and the maximum-width portion of the bead core is positioned in the second and subsequent levels of the metal cord as counted from the tire-radial-direction outer end of the bead core to the tire-radial-direction inner side thereof.

NAKATA YOSHIKI (JP)
OOSAWA YASUO (JP)

PCT/JP2022/006188

August 25, 2022

February 16, 2022

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BRIDGESTONE CORP (JP)

B60C15/04

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TAIYO, NAKAJIMA & KATO (JP)

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