Provided is a heavy duty pneumatic tire that can reduce the risk of occurrence of cap cord breakage and belt edge loosening, and that can suppress shape changes caused by travel. A tire (2) has a reinforcement layer (20) between a tread (4) and a carcass (12). The reinforcement layer (20) has a cap belt (38) and a belt (40). The cap band (40) has a full cap band (42) and a pair of edge cap bands (44). The end portion (42e) of the full cap band (42) is located on the outside in the axial direction of the shoulder circumferential groove (28s). A third belt ply (46C) of the belt (40) is located radially inward of the pair of edge caps (44). The distance (Y) between each edge cap belt (44) and the full cap belt (42) or the third belt ply (46C) is 2.2 mm or more and 4.0 mm or less. The ratio of the tire thickness (E) at the end (PE) of the tread surface (22) to the tire thickness (D) at the equatorial plane is 1.2-2.0.

    提供重载荷用充气轮胎,该重载荷用充气轮胎能够实现冠带帘线的断裂和带束边缘松开的产生风险的降低,并且能够实现由行驶引起的形状变化的抑制。轮胎(2)具有位于胎面(4)与胎体(12)之间的增强层(20)。增强层(20)具有冠带(38)和带束(40)。冠带(40)具有全冠带(42)和一对边缘冠带(44)。全冠带(42)的端部(42e)位于胎肩周向槽(28s)的轴向外侧。带束(40)的第三带束帘布层(46C)位于一对边缘冠带(44)的径向内侧。各个边缘冠带(44)与全冠带(42)或第三带束帘布层(46C)之间的距离(Y)为2.2mm以上且4.0mm以下。胎面表面(22)的端部(PE)处的轮胎厚度(E)与赤道面处的轮胎厚度(D)之比为1.2以上且2.0以下。


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    Title :

    Heavy duty pneumatic tire


    Additional title:

    重载荷用充气轮胎


    Contributors:

    Publication date :

    2023-05-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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