PNEUMATIC TIRE

To improve wear performance while maintaining wet performance.SOLUTION: On a tread 16, provided are three main grooves of a center main groove 28 A, and a pair of shoulder main grooves 28B and 28C positioned on both sides of the center main groove. Void ratio VR is 26.5 to 28.5%, the Void ratio VR b...

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Bibliographische Detailangaben
1. Verfasser:	HASHIMOTO YOSHIHIKO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Zusammenfassung:	To improve wear performance while maintaining wet performance.SOLUTION: On a tread 16, provided are three main grooves of a center main groove 28 A, and a pair of shoulder main grooves 28B and 28C positioned on both sides of the center main groove. Void ratio VR is 26.5 to 28.5%, the Void ratio VR being ratio SB/SA of area SB of a non-grounded part in a tread surface 16A to area SA of the tread surface 16A between ground ends TE and TE. Groove depth DG of each main groove 28 is 79 to 85% of distance DX from an outer surface of an outermost layer 26 of a plurality of reinforcing layers under a groove of each main groove 28 to the tread surface 16A.SELECTED DRAWING: Figure 2 【課題】ウェット性能を維持しつつ摩耗性能を向上する。【解決手段】トレッド１６には、センター主溝２８Ａと、その両側に位置する一対のショルダー主溝２８Ｂ，２８Ｃとの、３本の主溝が設けられている。接地端ＴＥ，ＴＥ間のトレッド表面１６Ａの面積ＳＡに対する当該トレッド表面１６Ａ内の非接地部分の面積ＳＢの比ＳＢ／ＳＡであるボイド比ＶＲが２６．５～２８．５％であり、各主溝２８の溝深さＤＧが、各主溝２８の溝下における複数の補強層の最外層２６の外表面からトレッド表面１６Ａまでの距離ＤＸの７９～８５％である。【選択図】図２