The aim of the present invention lies in providing a tire tread and a tire having said tread, which make it possible to demonstrate a higher level of performance on ice and snow when the tread is brand new, and in particular performance on snow, while maintaining wet performance. The tire tread according to the present invention comprises: a plurality of ground contact elements which are defined by a plurality of grooves formed on a ground contact surface in contact with a road surface when the tire is rolling, and having an upper surface forming a portion of the ground contact surface; and a plurality of small recesses which open at the upper surface, are indented inwardly in the tire radial direction, and are not in communication with each other, the depth h of the small recesses being between 0.15 mm and 1.5 mm when the tread is brand new, and the projected density of the small recesses (a value obtained by dividing the total projected length LP (mm) of the small recesses present on the upper surface of the ground contact elements, projected on a plane parallel to the tire axis of rotation and perpendicular to the upper surface, by the surface area (mm 2 ) of the upper surface when the small recesses are not present, and multiplying the result by 1000) being 200 or greater.
ПРОТЕКТОР ШИНЫ И ШИНА, ИМЕЮЩАЯ УКАЗАННЫЙ ПРОТЕКТОР
2019-04-24
Patent
Electronic Resource
Russian
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |