Automotive engineering is a very competitive field and find new ways of innovation is difficult. Use an existing element for a new use, far from his normal use can give more chances for this innovation. With a new design, it is possible to take profit of the existing rotating movement of the wheels, and make them work as turbomachines. The objective of this new use is to reduce the air pressure beneath the car, increasing then the downforce. This extra downforce achieved with the new design can be very interesting for sports car, as they need high downforces to enhance stability at high velocities. The rim will be performed as a centrifugal fan extracting air from under the car and blowing it out. The new design of the rim will make necessary to think about little changes around the wheel area, as brake placement, fixing system, etc. The theoretical results have to be verified by lab experimentation with the physical model made, and from that experiments, some modifications can be introduced to the model. Future works as the experimentation, modification and test with real conditions remain open. Also, new uses can be studied to this design as for example brake cooling or drag reducing.