Season tri tip with salt and pepper. Grill over medium heat for about 8 to 9 minutes on each side or until meat is cooked to your liking.
Combine barbecue sauce, honey, lime juice, chipotle pepper and adobo sauce in a small saucepan. Bring to a boil; reduce heat to low and simmer for 5 minutes. Remove from heat and let cool slightly; stir in raspberries and cilantro. Brush some of the sauce over beef during the last 5 minutes of grilling; serve the rest with the sliced beef.
Servings: 6