{
  "$type": "site.standard.document",
  "description": "In a pneumatic tire in which land portions (12a, 12b) are formed by being partitioned by circumferential grooves (11i, 11o) and widthwise fine grooves (13a, 13b) are formed on the land portions (12a, 12b) and extend in a tire widthwise direction, the widthwise fine grooves (13a, 13b) have a widened…",
  "path": "/patents/1411189",
  "publishedAt": "2025-01-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0306",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "In a pneumatic tire in which land portions (12a, 12b) are formed by being partitioned by circumferential grooves (11i, 11o) and widthwise fine grooves (13a, 13b) are formed on the land portions (12a, 12b) and extend in a tire widthwise direction, the widthwise fine grooves (13a, 13b) have a widened groove portion (13ae, 13be) of an increased groove width on a groove bottom thereof, and in a state in which the tire is worn to a depth of 50% of a depth from a tread treading face of an unused tire to an end face of a tread wear indicator (16), an inner side land portion cross sectional area ratio (Pa) of the inner side land portion (12a) on a tire equator line (Le) side is higher than an outer side land portion cross sectional area ratio (Pb) of the outer side land portion (12b) on the outer side in the tire widthwise direction. By this, provided is the pneumatic tire which can suppress uneven wear after the middle stage of wear while a wet grip performance is normally kept good.",
  "title": "PNEUMATIC TIRE"
}