{
  "$type": "site.standard.document",
  "description": "A pneumatic tire that achieves, at high level, both a reduction of noise arising from circumferential main grooves and steering stability while maintaining wet performance is provided. The pneumatic tire includes: two external circumferential main grooves in a vehicle-installed outside half…",
  "path": "/patents/932142",
  "publishedAt": "2017-01-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0302",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "A pneumatic tire that achieves, at high level, both a reduction of noise arising from circumferential main grooves and steering stability while maintaining wet performance is provided. The pneumatic tire includes: two external circumferential main grooves in a vehicle-installed outside half portion; two internal circumferential main grooves in a vehicle-installed inside half portion; a central land portion; an external intermediate land portion; and an internal intermediate land portion. The central land portion is a rib-shaped land portion continuous in the tire circumferential direction. The external intermediate land portion includes external resonators each composed of a first auxiliary groove, a first branch groove, and a second branch groove. The internal intermediate land portion includes internal resonators each composed of a second auxiliary groove, a third branch groove, and a fourth branch groove. The first auxiliary groove is less in groove volume than the second auxiliary groove. A total groove width of the two external circumferential main grooves is less than a total groove width of the two internal circumferential main grooves.",
  "title": "PNEUMATIC TIRE"
}