The ornamental design for portions of a steeringwheel for a vehicle, as shown and described.
FIG. 1 is a front and left side perspective view of portions of a steering wheel for a vehicle showing our new design;
FIG. 2 is a front and right side perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof; and,
FIG. 6 is a bottom view thereof.
The portions of a steering wheel for a vehicle shown throughout the drawing views in a deemphasized and faded out half tone form are for environmental and illustrative purposes and form no part of the claimed design.