TIRE INCLUDING A TREAD PROVIDED WITH INCISIONS INCLUDING WIDE PORTIONS AND NARROW PORTIONS

摘要

The invention relates to a tire including a rolling surface having incisions (20) that have a substantially transverse orientation, open onto the rolling surface, have a depth P, and form, on the rolling surface of the tire in the new condition, two edges (21, 22) defining at least one narrow portion (30) of the incision having a mean width LE = 2 mm and at least one wide portion (40) of the incision having a mean width LL 2 mm, said wide and narrow portions being alternately arranged and extending over the entire depth P of the incision (20). The volume of each wide portion (40) is primarily between half the depth P of the cutout and the depth P. Said tire is characterized by a relation between the sum LE, the thickness of the tread, and other values.