The ornamental design for a wheelinnercore, as shown and described.
FIG. 1 is a perspective view of a wheel inner core showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is another perspective view thereof with the wheel inner core being coupled to a wheel.
The broken line portions of the wheel inner core in FIGS. 1-8 represent unclaimed portions of the claimed design and form no part thereof. The broken lines of the wheel in FIG. 8 illustrate unclaimed environment and forms no part of the claimed design.