The ornamental design for a tire tread and buttress, substantially as shown and described.
The FIG. 1 is a perspective view, partly schematic, of a tire tread and
buttress embodying the design of the present invention, it being
understood that the pattern is repeated throughout the circumference of
the tread, the opposite side being substantially the same as that shown.
FIG. 2 is a front elevational view, thereof.
FIG. 3 is a partial side elevational view, thereof.
The broken lines in the drawing are for illustrative purposes only.