Originally Posted by Adam

The stock spoiler doesn't put anywhere near John Goodman downforce on the rear. I remember reading it's around 30-50 lbs of downforce somewhere in Porsche literature.....and that's at very high speed not 60 mph. Apparently that's enough to break that wimpy aftermarket wing. I'm willing to bet the aftermarket wing generates even less downforce than the stock spoiler. The Gemballa unit looks pretty solid though.