The ornamental design for a tire tread, as shown and described.
FIG. 1 is a side perspective view of a tire tread showing my new design, it
being understood that the tread pattern is repeated throughout the
circumference of the tire tread, the opposite side being the same as that
shown;
FIG. 2 is a front elelvational view thereof;
FIG. 3 is a side elevational view of the right side thereof, the opposite
side being identical thereto; and,
FIG. 4 is an enlarged fragmentary side perspective view thereof.
The broken lines defining the tire sidewall and inner bead are for
illustrative purposes only and form no part of the claimed design.