Tire tread and buttress

FIG. 1 is a perspective view of a tire tread and buttress showing our new design, it being understood that the pattern is repeated throughout the circumference of the tread and buttress, the opposite side being substantially the same as that shown;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a fragmentary side elevational view thereof on a larger scale; and

FIG. 4 is a fragmentary front elevational view thereof on a larger scale.

The broken line showing of environmental structure in FIGS. 1 and 3 of the drawing is for illustrative purposes only and forms no part of the claimed design.