The ornamental design for a tire tread, as shown and described.
FIG. 1 is a front perspective view of a tire tread showing my new tire
tread design, it being understood that the tread pattern is repeated
uniformly throughout the circumference of the tire with the opposite side
being the same as for the side shown; and,
FIG. 2 is an enlarged fragmentary front elevation view of my new tire tread
thereof.
The broken line showing of a tire sidewall and inner bead is for
illustrative purposes only and forms no part of the claimed design.