You can dry-brine prime rib (kosher salt is the best type for dry-brining), but it might not be necessary if you select prime grade beef. Read the original article on The Daily Meal.

This helps it cook more evenly. In a small bowl, combine the Prime Rib Rub ingredients (omit the salt if dry brining). Lightly oil the whole roast on all sides. Then generously rub the seasoning ...