Patent ID: 9272583
Filing Date: 2016-03-01
CPC Classification: B60C

Claim Text:
1. A pneumatic tire comprising: a pair of beads; a carcass extending between one of the beads and the other of the beads; and an insert disposed inward of the carcass, wherein each of the beads includes an inner part disposed inward of the carcass in an axial direction, and an outer part disposed outward of the carcass in the axial direction, the carcass includes a carcass ply, the inner part includes an inner core that contacts with an inner surface of an end portion of the carcass ply, and an inner apex that covers the inner core and extends outward of the inner core in a radial direction, the outer part includes an outer core that contacts with an outer surface of the end portion of the carcass ply, and an outer apex that covers the outer core and extends outward of the outer core in the radial direction, the insert is disposed outward of the inner apex in the radial direction, a ratio of a complex elastic modulus Ea of the inner apex to a complex elastic modulus Eb of the outer apex is less than or equal to 0.3, and a ratio of the complex elastic modulus Ea of the inner apex to a complex elastic modulus Ec of the insert is greater than or equal to 1.