Tread portion of an automobile tire

FIG. 1 is a perspective view of a tread portion of an automobile tire showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof:

FIG. 6 is a fragmentary enlarged front view;

FIG. 7 is a sectional view taken along line 7 - 7 in FIG. 6 ; and,

FIG. 8 is a sectional view taken along line 8 - 8 in FIG. 6 .

The broken lines are used to show portions of the tread portion of an automobile tire that are not being claimed, and thus form no part of the claimed design.