{
  "$type": "site.standard.document",
  "description": "Provided is a tire with excellent overall performance in terms of ride quality and durability. The tire includes a circumferential reinforcing layer including a wound bundle of two or more parallel cords and a cap tread, wherein, provided that the cords each have a flexural stiffness F (cm·g); the…",
  "path": "/patents/1392472",
  "publishedAt": "2025-12-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C9/2204",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided is a tire with excellent overall performance in terms of ride quality and durability. The tire includes a circumferential reinforcing layer including a wound bundle of two or more parallel cords and a cap tread, wherein, provided that the cords each have a flexural stiffness F (cm·g); the parallel cords consist of a number N (number) of cords; a tread portion has a thickness D (mm) on a straight line extending from an edge of the circumferential reinforcing layer in a tire width direction to a surface of the tread portion; the cap tread includes a rubber composition having a complex modulus of elasticity E (MPa) as measured at a temperature of 70°C, an initial strain of 10%, a dynamic strain of ± 1%, a frequency of 10 Hz, and elongation mode; the circumferential reinforcing layer has a bundle stiffness S (cm·g·number) defined by F × N; and the tread portion has a stiffness G (N/mm) defined by E × D, the tire has a ratio of the bundle stiffness S of the circumferential reinforcing layer to the stiffness G of the tread portion, S/G (10 g·mm·number/N), of 10.6 or lower.",
  "title": "TIRE"
}