You really shouldn't be going any lower...you'll actually make the handling worse of the car...which completely destroys the point of any bmw. It's like buying a 357 magnum and modding it to fire a .22....sure the .22 bullet flys faster, but what's the point??
Read up here some people....
http://www.motoiq.com/magazine_artic...ella-fail.aspx
http://www.motoiq.com/magazine_artic...-your-car.aspx
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Faster, faster, faster, until the thrill of speed overcomes the fear of death… – Hunter Thompson