The ornamental design for a wheel, as shown and described.
FIG. 1 is a left front perspective view of an ornamental wheel according to a preferred embodiment of the invention.
FIG. 2 is a front view of the wheel shown in FIG. 1; and,
FIG. 3 is a left side view of the wheel shown in FIG. 1, the right side view being a mirror image thereof.
Any elements shown in broken lines form no part of the claimed invention in this application, and are instead included to show environmental aspects of the claimed invention. For example, the broken lines which show the rim, the valve stem hole, the bolt holes, and the center hole form no part of the claimed design.