If it makes you feel any better I plan on getting it soon..

 

I have a OEM spoiler, doesn't do much of anything.

 

I've seen GT wings that look good (in my opinion anyways) but they rippled the trunk pretty badly....what do you have to do to reinforce the trunk or buy a different trunk lid or something to support those wings?

 

Gives you an excuse to buy a CF trunk

 

Excel, did you have not have a spoiler before to compare it to? I'm asking if you did a before and after comparison.

I also just noticed a whole bunch of cars I would consider respectable having these puny spoilers. Are they all there for looks? If I were a betting man, I'd bet no. Besides the E46 M3, the Audi S4 also has the puny spoiler...making me think that the disrupting of lift is a good idea that's catching on. Reducing lift also reduces drag. (Don't remember if that's a universal rule).

 

Always trying to be helpful, I think maybe what you're going for is "Ground Effect", which you would be right in saying only works with the underbody.

From an engineering perspecitve, negative lift can be accomplished (as youngjun91 has alluded to) with negative alpha on wings on cars or airplanes, or even with sports balls (i.e., tennis, baseball, cricket, golf, etc.) having topspin.

On the issue of syntax, could we not say that wings on the back of the car "redirect" airflow? Saying that they "break up airflow" suggests that they are there to create vorticity or induce a transition to turbulent flow (which they may do as a side effect, but it's hardly the main point).