{
  "$type": "site.standard.document",
  "description": "An object of the present invention is to provide a tire having a good balance of fuel efficiency, chipping resistance, and steering stability. The tire comprises a tread, wherein the tread has land parts partitioned by a plurality of circumferential grooves, wherein at least one of the land parts…",
  "path": "/patents/1414662",
  "publishedAt": "2024-12-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "An object of the present invention is to provide a tire having a good balance of fuel efficiency, chipping resistance, and steering stability. The tire comprises a tread, wherein the tread has land parts partitioned by a plurality of circumferential grooves, wherein at least one of the land parts has no opening in the circumferential groove at both ends and has one or more lateral grooves in which a groove depth of the deepest part of the groove bottom is 80% or more of a thickness of the entire tread part, wherein the tread has at least one rubber layer, wherein a first rubber layer constituting the tread surface is composed of a rubber composition comprising a rubber component, a filler, a silane coupling agent, and a thiuram-based vulcanization accelerator, wherein the rubber component constituting the first rubber layer comprises an isoprene-based rubber, a styrene-butadiene rubber, and a butadiene rubber, wherein the filler comprised in the rubber composition constituting the first rubber layer comprises silica, wherein the rubber composition constituting the first rubber layer comprises 60 parts by mass or more of the filler based on 100 parts by mass of the rubber component, and wherein a breaking energy measured after subjecting the rubber composition constituting the first rubber layer to thermal deterioration at 80°C for 7 days is 1,000 or more.",
  "title": "TIRE"
}