The ornamental design for a bicycletire tread, as shown and described.
FIG. 1 is a perspective view of a bicycle tire tread showing my new design,
it being understood that the pattern which is partially illustrated is
repeated uniformly throughout the circumference of the tread as shown
schematically in solid lines;
FIG. 2 is an enlarged fragmentary plan view showing the tread pattern in
greater detail; and
FIG. 3 is a transverse section taken substantially along the line 3--3 of
FIG. 2 illustrating the profile of the tread pattern in greater detail.
The broken line showing of the tire carcase in FIGS. 1 and 3 is for
illustrative purposes only and forms no part of the design.