Replacement garage door rollers for home use. Garage door rollers are easy to replace yourself. Standard solid nylon wheels. These are the standard wheels used by most door manufacturers and installers. They are made of solid nylon for quiet operation, and roll smoothly. They are perfect for replacing old, worn, noisy, or broken rollers. The average residential garage door has 10 rollers on it. For smooth and easy opening and closing, and to extend the life of the electric door opener, change all rollers at the same time or when adding a new electric opener. Always work carefully and secure the door before starting your replacement.