Are Active Aerodynamics On A SUV More Style Than Function?

If you’re not a sad act like me who lives in the minutiae of press releases, you may not know that when you’re going above 99mph in the new Cayenne Turbo, a little flap in the roof spoiler tilts by six degrees (and up to 19.9 degrees in sportier settings) to give the rear axle more stability. It can also act as an airbrake (y’know, like a Chiron or fighter jet) between 105mph and 167mph – extending to 28.2 degrees, again, to give the rear axle more stability. But this isn’t in a Chiron or fighter jet; it’s a big, fat, blobby SUV.
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CANADIANCOMMENTS - 6/8/2020 12:21:09 PM

+2 Boost

You would have to ask Porsche about it. One might assume that very bad things may happen to this SUV at the high speeds mentioned, so Porsche puts this feature on to keep the vehicle stable and safe(r) to drive. Not sure they would ever admit to that however. I can't believe the added weight and cost is there for no reason but that it looks cool.

dumpsty - 6/9/2020 11:23:00 AM

+1 Boost

how fast would you need to drive (a 2-3 ton SUV) for any active aero bits to provide meaningful down-force to help with vehicle stability? probably depends on the individual SUV & the size of the aerodynamic trim attached & where & etc.

if you have to drive at least 100mph to get those systems to active, then whats the point for the "daily, traffic-clogged highway" driver?