Preheat the oven to 300°F. Line a large baking sheet with foil and place a wire rack on top.
Pat the ribs dry with paper towels. Rub both sides with olive oil.
Stir together the smoked paprika, garlic powder, salt, and black pepper in a small bowl. Sprinkle the mixture evenly over both sides of the ribs and press it in.
Place the ribs on the prepared rack, meaty side up. Cover the entire baking sheet tightly with foil.
Bake for 2 hours until the meat is tender and pulls back from the ends of the bones.
While the ribs bake, mix the barbecue sauce, brown sugar, apple cider vinegar, and liquid smoke in a bowl until smooth.
Remove the ribs from the oven and discard the top foil. Brush the glaze generously over both sides of the racks.
Return the ribs to the oven, uncovered, and bake for 20 to 25 minutes until the glaze thickens and begins to darken in spots.
Let the ribs rest for 5 minutes, then slice between the bones and arrange on a platter.