+1 for the Nightbreakers from Powerbulbs. The price was amazing and they arrived from the UK within a week. The bulbs are very bright and clear.

ETA: Here's the direct link. http://www.powerbulbs.com/us/product...mited-d2s-twin

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2006 X5 4.4i
Sport package, summer package, cold weather package, DSP + Nav
Bought 2/14 with 73k miles