Mix all ingredients in a bowl.
Add steak tips (around 1-2 lbs) to bowl and toss to cover. Or, add steak tips to ziplock bag and pour marinade over tips.
Place in refrigerator for 8 hours. If using a ziplock bag, turn the bag over 4 hours in to help evenly distribute the marinade.
Fire up grill to high heat. Oil grill to prevent sticking, then add tips.
Continue to grill over high heat, turning tips when they are slightly charred on the outside.