The ornamental design for a tread and shoulderportion of a vehicletire, as shown and described.
FIG. 1 is a front perspective view of a tread and shoulder portion of a
vehicle tire showing my new design, it being understood that the tread and
shoulder pattern repeats uniformly throughout the circumference of the
tread and shoulder;
FIG. 2 is a front view of the tire of FIG. 1 it being understood that the
back view is the same; and,
FIG. 3 is a side view of the tire of FIG. 1 shown at a reduced scale, it
being understood that the other side is the same.