The ornamental design for a tire tread, as shown and described.
FIG. 1 is a perspective view of a tire tread showing my new design, it
being understood that a tread pattern is repeated over the outer
circumference and shoulder of a tire, the opposite side being the same as
that illustrated; and,
FIG. 2 is a enlarged fragmentary front elevation view of the tread pattern
of FIG. 1 showing my new design for the tire tread.
The broken line showing of a tire sidewall and inner bead is for
illustrative purposes only and forms no part of the claimed design.
In the drawings, the dark stippled surface shading represents the recessed
portion of the tread grooves, having a depth as best shown along the
central right edge of FIG. 1.