how long to i cook ribs for on grill
1 Grill your ribs for 3 hours bone-side down. 2  Wrap them in foil and grill, bone-side up, for 30 to 60 minutes. 3  Same as with baby backs, you can an extra special touch here by pouring a cup of apple cider or juice into the foil packet.4  Unwrap them and grill for 30 more minutes bone-side down.efore we get into how long you should grill your ribs there's one important thing to keep in mind: while dry spice rubs should be applied before you start to cook, sauces should not be applied until the last 20 minutes of cooking at the earliest.