Quote Originally Posted by Ketron View Post
I'm going through this same issue on the e92. I've bought a new set of bulbs and a headlight restoration kit to polish out any chips etc. I'm hoping this will do it, I don't remember the light output being so poor on my previous 335d, I might as well be driving by candle light.
New bulbs will help if they're replacing very old ones but if the light is really bad they may not be the only culprit.

Regarding the headlight covers, polishing shouldn't increase light output really unless they are going a bit opaque. Clearer covers would reduce light scattering though and might sharpen up the beam profile.

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