If your car takes the 9005 & 9006 bulbs then put the high beam(9005) light bulb in the low beam side and you will never go back to the stock 9006 low beam light again.
http://www.bmwe34.net/E34main/Upgrade/More_light.htm
I would use the SilverStar ULTRA 9005 bulb.

ROD

Ok so if I get the silverstars lights and put the 9005 in the lowbeam would I still use them in High cause wouldn't the highno be neccessary?
Also should I get the Ultra?

No you have two different lens, one for the high beam and one for the low beam.
Park your car 15 to 20 feet from a wall and have your lights on low, you will see that
the beam of light will not be very high(2 to 3 feet) then turn the high beams on and the
light will be higher on the wall and it will shine farther down the road. There is a cut off
on the low beam lens so the light will not blind oncoming traffic. The down side of that is
that the light will not light up the road very far in front of your car. That is why when
you put the brighter light'* on your low side it lights up the road better than the stock
bulb but it WON'T light up the road as good as your high beam'* will.
I would get SilverStar Ultra'* 9005'* and put them in both the low and high beam side'*.
Just modify the light'*(2 of them) like the post i put up.

ROD

Ok thanks Rob, I will be getting them today! Oh one more question, the Ultras do they light up like the stock color or the blueish white?

They look white to me
http://www.sylvania.com/ConsumerProd...nce/Silverstar

ROD
p.*. don't forget to put two O-rings on the light'*(2) that you modify.