The ornamental design for a tyre tread, as shown and described.
FIG. 1 is a perspective view of the tyre tread of the present design, it being understood that the tread pattern is repeated throughout the circumference of the tire tread;
FIG. 2 is a front view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left lateral view thereof;
FIG. 6 is a right lateral view thereof;
FIG. 7 is an enlarged fragmentary front view showing the details of the tread portion thereof at brackets 7-7 in FIG. 2; and,
FIG. 8 is a bottom view thereof.
The lines defining the sidewall, inner bead, and the peripheral boundary between the claimed tire tread and the sidewall depict environmental subject matter that forms no part of the claimed design.