I think I've inherited the same problem on my 05 roadster, with low dipped beams and an odd pattern. I'll take them out and refit at the weekend and would like to say a big thanks for the photo guide. Really useful.

Just one thing though - and I don't want to appear a smarta$$, but I've always been taught not to touch the glass on Halogen bulbs and photo 7 shows doing just that. So I went off and checked if my mind was playing tricks on me and on Osram.co.uk it says the following

"HALOTHERMŽ lamps are made of
quartz and should not come in contact with substances containing sodium. They should never be touched with bare fingers, since oils and other residue cause diversification of the quartz, which leads to premature lamp failure. Prior to operating the lamp, any fingerprints must be removed by using a suitable cleaning solvent".

Ok, that's for Halotherm lamps, whatever they are, but it appears the majority of modern Halogen headlights are made of quartz glass because of their resistance to shattering when exposed to moisture, so I think care needs to be taken. I normally just make sure I've washed my hands and wrapped some fresh kitchen roll paper around the glass of the bulb, or better still, just hold the metal end!

I hope that's of some help, as decent bulbs aren't cheap and it makes sense to make them last if you can!

Mike