The ornamental design for a carousel grille with rotating tines, as shown and described.
FIG. 1 is a front perspective view of a carousel grille with rotating tines showing my new design;
FIG. 2 is a top plan view thereof; and,
FIG. 3 is a side elevational view thereof, all sides being identical, the lower portion is shown cut off for ease of illustration, the claim being directed to the entire grill shown in FIG. 1.