[header] How to grill ribs [title] Decide what kind of ribs you want to grill. [step] The 2 most popular types are baby back ribs and spare ribs, but there are significant differences between the 2 cuts. [substeps] Baby back ribs come from the top of the rib cage. 
They range in length from 3 inches (7.6 cm) to 6 inches (15. 2 cm) and are meatier than spare ribs.