{
  "$type": "site.standard.document",
  "description": "Provided is a tire 1 that can suppress a decrease in grip performance and wet performance in a late stage of wear while improving rolling resistance performance and wear resistance. The tire 1 includes a tread 110 having: a layered structure including a first cap layer 111, a second cap layer 112…",
  "path": "/patents/1388584",
  "publishedAt": "2026-04-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/005",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided is a tire 1 that can suppress a decrease in grip performance and wet performance in a late stage of wear while improving rolling resistance performance and wear resistance. The tire 1 includes a tread 110 having: a layered structure including a first cap layer 111, a second cap layer 112, and a base layer 113; and a tread pattern having shoulder circumferential grooves 330 and circumferential narrow grooves 320. Each circumferential narrow groove 320 has a narrow portion 321 and a wide portion 322. The narrow portion 321 has a groove width NW with which sidewalls 321a (321b) of the narrow portion 321 come into contact with each other when the tire 1 comes into contact with a road surface. A complex elastic modulus of the second cap layer 112 is lower than a complex elastic modulus of the first cap layer 111.",
  "title": "TIRE"
}