The ornamental design for a tire tread and buttress, substantially as shown and described.
FIG. 1 is a perspective view, partly schematic of a tire tread and buttress
showing my new design, it being understood that the pattern is repeated
throughout the circumference of the tread and buttress as shown
schematically in solid lines, the opposite side being substantially the
same as that shown;
FIG. 2 is a front elevational view thereof; and
FIG. 3 is a fragmentary side elevational view thereof with a portion broken
away for ease of illustration.
The broken lines in the drawing are for illustrative purposes only.