July 4th is a huge holiday for grilling outdoors. And grilling or barbecuing ribs is always popular fare. Whether you choose spare ribs, baby back ribs, St. Louis-style ribs, questions come up as to how to prepare them and grill them to perfection. Relax. We are here to help. Here are our five tips for rib success. 1. Choose your ribs Spare ribs Located on the lower part of the belly, these have more fat, and there is sometimes a layer of fat on top. The fat adds flavor when they cook, and there's more tenderness. Spare ribs have a skirt on the back. You can leave it on or cut it off and cook separately.