| 摘要 |
A pneumatic tire tread contains at least one central bar and grooves. The central bar has hollows, two circumferential grooves are located on two sides of the bar. The grooves divide the surface onto four rows. In the outer rows the transverse curvilinear grooves are made, which expand toward the tire shoulder and divide thereof onto elements in the form of solid blocks, in which the hollows (9) extending to the block middle and cuts are located. The elements of inner rows are made in the form of parallelograms, which two sides are straight and two - are closed by arcs. Each element has the zigzag groove (7), dividing thereof into two parts, in each of which two parallel cuts are made. The zigzag groove (7) has two opposite directed hollows (13), each of which is parallel to the cuts in the corresponding part. |
