Preheat smoker with wood chips (and water if needed) according to the manufacturers directions of your smoker or grill.
In medium or small bowl, add Dry Rub Ingredients and combine until very well mixed. Place smoker rack onto a baking sheet, and coat both sides of rack of ribs well with dry rub mixture. Place onto sprayed rack. Leave at room temperature while smoker heats.
When smoker is fully heated to 225º and smoking, add grate of ribs. Cook 3 hours.
While ribs are cooking, make a homemade bbq sauce if making from scratch.
After 3 hours, remove ribs and place into a large sheet of foil bone side up. Pour a little beer into the foil packet and seal closed. Place back into smoker and continue to cook for another 2 hours.
When ribs are done after the second cooking, remove from the foil carefully, coat both sides well with barbecue sauce, return to smoker, and smoke until tender and the sauce is set. About another 30 - 40 minutes minutes. Do not overcook.