I was watching a car show recently where they discussed all the design changes made to vehicles in the last few years in an effort to increase aerodynamics and they talked about how the spokes on a rim are designed to direct air past the car while spinning. This got me thinking about the wheels of my own car and what would happen if they were mounted such that they spin the wrong way, creating an anti-aerodynamic effect. There has always been a significant reduction in range on my car when running my 21" summer wheels as compared to the 19" T-Sportlines I use in winter. I'd always assumed it was due to the increased rolling resistance of the sticky summer rubber, but what if I put the turbines on the wrong way and air isn't flowing past them properly? To my knowledge, I don't remember anyone talking about the Tesla turbines (or cyclones) having an intended direction of rotation independent of the tires mounted on them. Can anyone speak to whether this matters or not? Are the Tesla wheels intended to spin in either direction? What about common turbine alternatives like Rial Luganos or T-Sportline rims? Please keep in mind that I'm concerned with the wheels themselves, irrespective of the rubber mounted to them.