The ornamental design for a tire tread, as shown and described.
FIG. 1 is a perspective view of the new design for a tire tread, it being understood that the tread pattern repeats circumferentially throughout the outer circumference and shoulder of the tire;
FIG. 2 is a front elevation view thereof; and,
FIG. 3 is a side elevation view thereof, the opposite side elevational view being a mirror image thereof.
The dash-dash broken lines depicting a tire sidewall and inner bead are included for the purpose of illustrating environment and form no part of the claimed design.
The dash-dot broken lines define the bounds of the claimed design and form no part thereof.
The stippling shown in the drawings represents the approximate three-dimensional contour of the design, and is not intended to indicate surface decoration. The dark stippled surface shading represents the recessed portion of the tread grooves.