Pound the boneless beef ribs to tenderize. Rub 3 to 4 tablespoons dry rub into each rib. Sprinkle garlic and pepper over each rib and let marinate in the refrigerator for 30 minutes.
Preheat a grill to 250 degrees F. Grill ribs for 10 minutes, then turn ribs and grill on other side for 10 minutes or until cooked to desired degree of doneness. Pour barbecue sauce over ribs after grilling, if desired, and serve.