How do the factory HID's work by the way...any big difference in lighting the roadway? I love my P5 headlights even more so after putting nighthawk bulbs in the lowbeams. I really interested in the M5, kinda think of it as a pregnant P5...(cool)TexasGT5 said:The factory HID's come with an in-car leveling switch that allows you to adjust the level up or down with four seperate settings.