The ornamental design for a wheeled suitcase, substantially as shown and described.
FIG. 1 is a perspective view of a wheeled suitcase showing our new design with the pivotable pull handle in the folded condition;
FIG. 2 is an elevational view of one side of the suitcase which is identical to the opposite side;
FIG. 3 is an elevational view of one end of the suitcase, which carries the pull handle;
FIG. 4 is an elevational view of the other end of the suitcase;
FIG. 5 is a top plan view of the suitcase; and
FIG. 6 is a bottom plan view of the suitcase.