When automotive parts are coated through this method, they become much more resistant to damage due to exposure to moisture, chemicals, UV light, chemicals, and impact. This is a major reason why you’ll find most performance wheels (especially those used in off-road applications) powder coated.
While some off-road or performance vehicles use powder coating to protect bare metal chassis or roll cages, it’s rare to find body panels coated due to the excessive cost and weight of powder-coated materials. Many auto applications use powder coats on wheels, engine parts, or undercarriage and suspension components.