The ornamental design for a wheelcover or wheelhubcover, as shown and described.
FIG. 1 is a perspective view of a first embodiment of a wheel cover or wheel hub cover according to the design;
FIG. 2 is a front view thereof; and
FIG. 3 is a reduced perspective view thereof, shown in its position of use.
FIG. 4 is a perspective view of a second embodiment of the wheel cover or wheel hub cover according to the design;
FIG. 5 is a front view thereof; and,
FIG. 6 is a reduced perspective view thereof, shown in its position of use.
The broken line showing of the wheel, parts for attachment, and configurations on the central hub area is included for the purpose of illustrating environment and forms no part of the claimed design.