{
  "$type": "site.standard.document",
  "description": "An object of the present disclosure is to provide a tire having improved total performance of steering stability during high-speed running and noise performance. Provided is a tire comprising a tread part, the tread part comprising at least a first rubber layer forming a tread surface and a second…",
  "path": "/patents/1402203",
  "publishedAt": "2026-05-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/005",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "An object of the present disclosure is to provide a tire having improved total performance of steering stability during high-speed running and noise performance. Provided is a tire comprising a tread part, the tread part comprising at least a first rubber layer forming a tread surface and a second rubber layer adjacent to an inner side of the first rubber layer in a tire radial direction, wherein the tread part comprises two or more circumferential grooves extending continuously in a tire circumferential direction, a pair of shoulder land parts partitioned by the circumferential grooves and grounding ends, and a center land part located between the pair of the shoulder land parts, wherein the first rubber layer and the second rubber layer are formed of a rubber composition comprising a rubber component, wherein a ratio of a distance H2 (mm) from an outermost surface of the tread part to an outermost part of the second rubber layer to a groove depth H1 of deepest parts of the circumferential grooves (H2/H1) is 0.40 to 0.90, and wherein, when a complex elastic modulus at 30°C of the first rubber layer is defined as E*T (MPa) and a complex elastic modulus at 30°C of the second rubber layer is defined as E*B (MPa), E*B is greater than E*T, and a ratio of E*T to H2/H1 (E*T/(H2/H1)) is 6.0 or more.",
  "title": "TIRE"
}