{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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    "mimeType": "image/png",
    "size": 71469
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  "description": "Provided is a tire having excellent overall performance in terms of handling stability on wet roads when worn and handling stability on icy roads when worn. The present invention relates to a tire including a tread portion, the tread portion having at least one main groove continuously extending in…",
  "path": "/patents/1397097",
  "publishedAt": "2025-07-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided is a tire having excellent overall performance in terms of handling stability on wet roads when worn and handling stability on icy roads when worn. The present invention relates to a tire including a tread portion, the tread portion having at least one main groove continuously extending in the tire circumferential direction, the tread portion including a rubber having a hardness at 60°C of 58 or higher and a hardness at 0°C of not more than 115% of the hardness at 60°C, the tread portion having a S/S ratio of more than 1, wherein S denotes the sea proportion (%) in the tread ground contact surface of the new tire, and S denotes the sea proportion (%) when the tread portion is worn until the depth of the main groove reaches 50% of that of the new tire.",
  "title": "TIRE"
}