In automotive culture, JDM refers to a style of modifying, or tuning, automobiles, often agreed upon as inspired by motorsports. Functionality of components is often preferred over cosmetics for greater performance. However, cosmetics may also be preferred, usually referred to as "clean." "True" Japanese domestic market components are also preferred over Japanese aftermarket (Japanese aftermarket refers to products produced by Japanese companies, however, are not sold strictly within the Japanese domestic market.) Furthermore, the opposite of JDM is a rice burner.