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.
In the drawings, the dark stippled surface shading represents the recessed
portion of the tread grooves, having a depth as best shown along the right
edge of FIG. 1.
The broken line showing of a tire sidewall and inner bead is for
illustrative purposes only and forms no part of the claimed design.