Since the 'lifted X5' thread went over the very limited options of raising your X5, lowering your X5 for handling purposes does make a little more sense. If this was just a standard SUV, they wouldn't have fitted the 4.6is with the same size rims and tires as are on the back of a Lamborghini Diablo, not kidding, my buddy has one. And put 'W' rated tires on it for towing purposes, not to mention it having the capabiliity to do 155mph. This is simply not a towing SUV only, though it probably does it well also.
YouTube - Bmw X5 le mans V12 LMR engine 700 hp by Hans Joachim Stuck
He's a video clip of our vehicles with upgraded suspension, slightly modified by a modder. LOL