| 摘要 |
[Object] A tire 2 that has quietness and durability improved without reducing steering stability, is provided.;[Solution] The tire 2 includes: a pair of beads 12; a carcass 14 that is extended on and between the beads 12 on both sides; and a pair of strips 24 that extend almost outward from the beads 12 along the carcass 14 in the radial direction. The beads 12 include cores 34, first apexes 36, and second apexes 38. The carcass 14 includes a carcass ply 44, and the carcass ply 44 includes a main portion 46 and turned-up portions 48. The turned-up portions 48 are disposed between the first apexes 36 and the second apexes 38. The turned-up portions 48 contact with the main portion 46 in portions radially outward of outer ends 42 of the first apexes 36. A position of an outer end 64 of each strip 24 is equal, in the radial direction, to a position Pb at which the maximum width is obtained, or the outer end 64 of each strip 24 is disposed radially inward of the position Pb at which the maximum width is obtained. |
| 主权项 |
1. A pneumatic tire comprising:
a tread having an outer surface that forms a tread surface; a pair of sidewalls that extend almost inward from ends, respectively, of the tread in a radial direction; a pair of clinches that extend almost inward from ends of the sidewalls, respectively, in the radial direction; a pair of beads disposed inward of the clinches, respectively, in an axial direction; a carcass extended on and between one of the beads and the other of the beads along inner sides of the tread and the sidewalls; and a pair of strips that extend almost outward from the beads, respectively, along the carcass in the radial direction, wherein the beads include: cores; first apexes that extend outward from the cores in the radial direction; and second apexes disposed outward of the first apexes in the axial direction, the carcass includes a carcass ply, the carcass ply is turned up around the cores from an inner side toward an outer side in the axial direction, and the carcass ply includes a main portion and turned-up portions by the carcass ply being turned up, the turned-up portions are disposed between the first apexes and the second apexes, and the turned-up portions contact with the main portion in portions radially outward of outer ends of the first apexes, outer ends of the second apexes are disposed outward of ends of the turned-up portions in the radial direction, a position of an outer end of each strip is equal, in the radial direction, to a position at which the tire has a maximum width, or the outer end of each strip is disposed radially inward of the position at which the tire has the maximum width, and a complex elastic modulus of each strip is higher than or equal to 60 MPa and not higher than 70 MPa. |
