{
  "$type": "site.standard.document",
  "description": "A tire includes a tread formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread has a plurality of circumferential main grooves . The plurality of circumferential main grooves define a pair of crown land portion…",
  "path": "/patents/1374080",
  "publishedAt": "2026-06-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/1281",
    "SUMITOMO RUBBER INDUSTRIES, LTD."
  ],
  "textContent": "A tire includes a tread formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread has a plurality of circumferential main grooves . The plurality of circumferential main grooves define a pair of crown land portion in the tread . Each crown land portion has a crown narrow groove . Each crown narrow land portion defined by the crown narrow groove has a crown sipe . An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DGs of the crown sipe , and a groove depth DGg of the crown narrow groove satisfy the following relational expression.",
  "title": "Heavy duty tire"
}