^ JLeviSW has a pretty good reputation & good prices on a different forum I frequent. (E46fanatics)
Quote:
Originally Posted by mhughett
I'm not sure I understand your question. If you have HID (xenon) lights, what upgrade is there? Aren't these standard on the M?
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Some people may want a different color(usually more blue). So they switch to 6000-8000k bulbs.