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50 counts drag coefficient reduction? Pardon me while I channel the Car Talk guys for a moment: "B-O-O-O-GUS!"
Aside from obvious issues such as, "...whereas the current study performed had the wheels stationary to remove the three Model 3 wheel options as a variable" (emphasis added), their characterization of CFD as somehow more accurate than other methods of testing such as wind tunnels is completely without merit. There's a reason OEMs still verify all their designs in the tunnel, and it ain't because CFD is the be-all, end-all. Depending what CFD method their guy used, it's good for getting a general idea of what's going on, but they're basing their entire claim on it. And they have financial incentive to present it as the gospel truth.
That said, it's nice to see an aftermarket supplier at least making an attempt at efficiency improvements.
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