Common items made via RIM include automotive bumpers, air spoilers, and fenders. OEM rear spoilers/wings may be used. Warning&colon; Spoilers in the Characters section. Passenger vehicles can be equipped with front and rear spoilers. Special front and rear spoilers and side skirts provide the appropriate visual appearance. Carbon fiber, titanium and magnesium are banned except for special parts like spoilers or wheels. Smith hosts a movie discussion show titled "Spoilers", which began airing in mid-2012. The feature warns users of potential spoilers in posts and pixelates preview images. There are also OPC tail spoilers and skirts. A second series of "Spoilers" aired on The Comedy Network in Canada. Stephenie Meyer also locked her MySpace comments in an attempt to avoid spoilers. The overall rounded shape was later modified with addition of the front and rear spoilers. Split flaps and spoilers had also disappeared. Aftermarket spoilers or body kits rarely improve a car's performance. We're just starting to learn how to get our cars better with the short spoilers.