Start by removing the silver skin (membrane) from the back of the ribs using a sharp knife or paper towel for grip—this allows the smoke and seasonings to penetrate the meat for better tenderness. Pat the ribs dry with paper towels, which helps the rub adhere better and promotes better smoke absorption. In a small bowl, combine the pork rub, beef rub, coarse ground black pepper, dry mustard, and cayenne pepper, stirring to create an even spice blend. Generously apply this mixture to both sides of the ribs, pressing gently so it sticks to the meat. I like to let the seasoned ribs sit at room temperature for about 15-20 minutes before smoking—this helps the meat cook more evenly.
Preheat your smoker to 250°F, allowing at least 15-20 minutes for it to stabilize at temperature. Use your preferred wood—hickory, oak, or a blend work well for pork ribs—and ensure your water pan is filled to help maintain steady heat and moisture. Once the smoker is fully preheated and producing steady, thin blue smoke, you're ready to add the ribs.
Place the seasoned ribs bone-side down on the smoker grates, arranging them so they have good airflow around them. Smoke for about 4 hours at 250°F, maintaining consistent temperature and smoke throughout. At the 4-hour mark, check for tenderness by probing between the bones with a toothpick—it should slide through with minimal resistance. Continue cooking until the ribs reach an internal temperature of 200-205°F when measured at the thickest part of the meat (not touching bone). I find that ribs typically reach this temperature around 5-6 hours total, but every smoker is different, so rely on both temperature and the toothpick test rather than time alone.
Remove the ribs from the smoker and let them rest uncovered for 10-15 minutes—this allows the juices to redistribute throughout the meat, keeping every bite tender and flavorful. After resting, slice between the bones to separate individual ribs and serve immediately while still warm.