Both my Turbo 911 and my previous 996 C4 had the Porsche Aerokit on them - they would ground-out on anything bar the mildest incline! I used to hate the sound of the front lower spoiler scraping the ground ooo

Too many sports cars are not designed for anything bar perfect level tarmac

(PS - I'm also a big fan of the Viper, although I fear they are not designed for English roads - great in a straight line on wide roads but not meant for thin twisty ones!)