hi tmling

I have exactly the same issue as you and havent found out what bulb type they are. If you goto the realoem.com website and put in your car details you will see the bulb for the angel eyes sits (section 6 with the letter A surrounding it) behind a rectangular box inbetween the main and high beams - its held in with three screws. It describes it as "Parts set parking-light bulb, halogen" buts all the info it gives..argh!!

here is the link
http://www.realoem.com/bmw/showparts.do?model=FF02&mospid=50541&btnr=63_0992& hg=63&fg=05

I havent attempted to open up the box yet as it looks almost as if the whole head light has to come out to open it. I suspect it is one of these bulbs

Buy BMW X5 E70 2007 LED SMD Bulbs | PPCGB

the T10 type (third one down) but I can be sure until I open up the box - plus I dont know if you will get error codes on the computer

At the moment it seems like an awful lot of work and I havent got time to do it.

I would highly recommend buying HIDs for the dipped beam which are H7, you can get focus adjustment ones from car-mod-shop.com - I am very pleased with these and are apparently better than factory xenons.

If you open up that box I'd love to know how you got on..