Coat the ribs generously in Coffee Rub and place in a large plastic bag or container. Pour Dr. Pepper in and let marinate in the fridge for 8 to 12 hours.
When ready to cook, preheat grill to 180°F.
Remove the ribs after marinating and re-coat with Coffee Rub. Wrap tightly in aluminum foil and place on grill for 3 to 4 hours until an internal temperature of 160°F and remove. Turn the grill up to 350°F.
Place back on the grill for 45 minutes or until an internal temperature of 200°F and remove from the grill, let stand for 10 minutes. Slather with the remaining sauce and enjoy!