Cast wheels are one of the more inexpensive Camaro wheels due to their relatively fast manufacturing process. There are two methods of manufacturing a cast wheel; gravity and low pressure (negative pressure) casting. With gravity casting, molten aluminum in poured into a wheel mold, where it is allowed to cool. In low pressure (negative pressure) casting, the molten aluminum is sucked into a mold through a vacuum in order to reduce the amount of bubbles that can form in the wheel. After the wheels cool in both processes, excess metal is trimmed by using a CNC milling machine.
The other main type of Camaro wheels are forged wheels. Forged wheels are manufactured differently than cast. Forged wheels begin as pieces of high-strength T6-6061 aluminum blocks. These blocks are subjected to vast amounts of pressure in a large forging machine, where they are compressed into the shape of a wheel. The intense pressure creates a dense makeup without any tiny bubbles or imperfections, resulting in a very strong wheel. Forged wheels are also lighter due to the fact that less material needs to be used in order to create a given strength. After the metal is forged, it is taken to a CNC milling machine to cut the design of the wheel.