| 摘要 |
A tire tread formed with circumferential zigzag ribs bordered by circumferential zigzag grooves is characterized in that the lateral walls of the ribs have a variable inclination with respect to the perpendicular to the tread. The minimum inclination is close to and on the side of portions of the ribs that project with respect to the grooves, and the maximum inclination is close to and on the side of portions of the ribs that are re-entrant with respect to the grooves. |
