Day One: Combine garlic, lime juice, honey, soy sauce, water, salt and pepper in a shallow 13x9x2-inch glass dish. Place steaks into pan; marinate steak overnight.
Day Two: Preheat grill; grill over hot coals for 15 to 20 minutes, turning periodically. Do not overcook.
Remove from grill, slice into even slices. Stir lime juice into avocado, distributing evenly.
Serve sliced meat with tortillas, picante sauce, chopped tomato, chopped onion and mashed avocado.
Servings: 12