| 摘要 |
<p>A tire tread (10) comprising one or more grooves (19, 22, 24, 28) having a groove depth and at least one rib (18, 20, 26) is disclosed. The tread (10) has a radially outer surface and a non-skid tread depth as measured from the radially outer surface of the tread (10) to the radially innermost surface of the one or more grooves (19, 22, 24, 28). The tread (10) further has a radially innermost layer (70) comprising of a base tread compound, a radially outer tread cap layer (50) and a middle tread layer (60) located between the base layer (70) and the outer tread cap layer (50). The rib (18, 20, 26) comprises a dividing line (A) formed between the radially outer tread cap layer (50) and the middle tread layer (60). The dividing line (A) has a notched area in which the radially outer tread cap layer (50) extends radially inward to a depth in a range of from 80% to 110% of the groove depth (D) or the non-skid depth. Also, a pneumatic tire comprising such a tire tread is disclosed.</p> |
