The ornamental design for a tire tread, as shown and described.
FIG. 1 is a perspective view showing our new tire tread design.
FIG. 2 is an end elevational view of the tire tread design shown in FIG. 1, taken in a direction perpendicular to the tire's axis of rotation; and,
FIG. 3 is a side elevational view of FIG. 2, taken in a direction parallel to the tire's axis of rotation.
The tread pattern is understood to repeat uniformly throughout the circumference of the tire, as shown schematically in solid lines. The dash-dot-dash lines delineating the claim boundaries and the broken lines depicting the unclaimed tire sidewall and inner bead form no part of the claim.