The invention is a tyre for a vehicle, said tyre comprising a tread (2) wherein a central portion of the tread (2) comprises at least two rubber mixtures (221, 222), said rubber mixtures (221, 222) constituting at least 90% of the tread volume. The first mixture (221) is radially outboard of the second mixture (222) and constitutes at least 40% and at most 60% of the volume of the central portion. The second rubber mixture (222) has a Shore hardness DS2 at least equal to 5 plus the Shore hardness DS1 of the first mixture (221). The dynamic loss of the second rubber mixture (222) at a temperature of 0 DEG C and at a temperature of 23 DEG C is at least equal to the dynamic loss of the first rubber mixture (221) at a temperature of 0 DEG C and at a temperature of 23 DEG C.
本发明为用于车辆的轮胎,所述轮胎包括胎面(2),其中胎面(2)的中心部分包含至少两种橡胶混合物(221、222),所述橡胶混合物(221、222)构成胎面体积的至少90%。第一混合物(221)沿径向位于第二混合物(222)的外侧,并构成中心部分的体积的至少40%且至多60%。第二橡胶混合物(222)的肖氏硬度DS2至少等于5加第一混合物(221)的肖氏硬度DS1。第二橡胶混合物(222)在0℃的温度下和在23℃的温度下的动态损耗均至少等于第一橡胶混合物(221)在0℃的温度下和在23℃的温度下的动态损耗。
Tyre with improved tread
具有改进胎面的轮胎
2022-03-11
Patent
Electronic Resource
Chinese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |