designers’ imagination launches.
  Once the aesthetics are worked out, the proposed design goes back to engineering for analysis and, if possible, implementation. The designer understandably wants to see his creation go into production unaltered but that’s not always possible and engineering can apply the brakes at this stage if it’s deemed necessary.
  One of the more common reasons why a proposal is sent back to the studio is because it’s impossible to execute utilizing the chosen manufacturing process. For example, very intricate details and severe angles are often inconsistent with a forging, so if the wheel is going to be forged the designer has to take this into consideration. In a similar vein, while cast wheels allow for much more elaborate designs, the molds have to be viable to build