Coat them with olive oil and season with your favorite BBQ rub and let them sit for 20 minutes.
Place the tips directly on the grill grates. You are going to cook them until the internal temperature registers 190°F, start checking from the 1½ hour mark. Spritz them with water if they appear to be drying out.
When the rib tips reach an internal temperature of 190°F, brush on bbq sauce and continue smoking until they reach an internal temperature of 200°F.
Remove rib tips from the smoker, let them cool off for 10 minutes and enjoy.
Notes
If you would like more instruction on how to trim pork ribs to St Louis style check out our post here.What wood should I use to smoke with? I smoked with a blend of cherry and hickory pellets and wood chunks.