{
  "$type": "site.standard.document",
  "description": "Excellent rolling resistance performance and wet grip performance are exhibited. [0002] Provided is a tire 1 in which a tread portion 2 includes a plurality of circumferential grooves 3. The circumferential grooves 3 include shoulder circumferential grooves 3A and a middle circumferential groove…",
  "path": "/patents/1402208",
  "publishedAt": "2024-01-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0323",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Excellent rolling resistance performance and wet grip performance are exhibited. [0002] Provided is a tire 1 in which a tread portion 2 includes a plurality of circumferential grooves 3. The circumferential grooves 3 include shoulder circumferential grooves 3A and a middle circumferential groove 3B. A groove depth D2 of the middle circumferential groove 3B is less than a groove depth D1 of the shoulder circumferential groove 3A. In a groove bottom 5B of the middle circumferential groove 3B, a circumferential sipe 7 and a circumferential width-increased portion 9 extending inwardly from the circumferential sipe 7 in the tire radial direction, are formed.",
  "title": "TIRE"
}