In the heavy duty tire (1), the tread rubber (7) has a cap layer (7c) and a base layer (7b) disposed closer to the inner periphery of the tire than the cap layer, the cap layer is provided with a cap surface layer (7c1) and a cap intermediate layer (7c2), and the tan delta of the cap surface layer is greater than the tan delta of the cap intermediate layer in a tensile test under the conditions of room temperature of 24 DEG C, amplitude of 2% and 50 Hz, and the tan delta of the cap intermediate layer is greater than the tan delta of the cap surface layer. And the difference between the tan [delta] of the cap surface layer in a tensile test at room temperature of 24 DEG C, amplitude of 2% and 50 Hz and the tan [delta] of the cap intermediate layer in a tensile test at room temperature of 24 DEG C, amplitude of 2% and 50 Hz is 0.06 or more.
在该重载荷用轮胎(1)中,胎面橡胶(7)具有盖层(7c)和布置得比盖层靠近轮胎的内周的基层(7b),盖层设置有盖表面层(7c1)和盖中间层(7c2),在室温24℃、振幅2%和50Hz条件下的拉伸试验中,盖表面层的tanδ大于盖中间层的tanδ,以及在室温24℃、振幅2%和50Hz条件下的拉伸试验中的盖表面层的tanδ与在室温24℃、振幅2%和50Hz条件下的拉伸试验中的盖中间层的tanδ之间的差为0.06或更多。
Heavy duty tire
重载荷用轮胎
2025-01-21
Patent
Electronic Resource
Chinese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |