We no longer carry LUX due to quality issues. We now carry the Hellst XRT brand which have a two year warranty (best in the business). They are a high quality LED H8 that have the latest CREE LED's - the highest brightness output that CREE makes for automotive applications. Our price is $145/set which is about $100 less than LUX. Check out our photo gallery as it will show you what your X5 will look like with the Hellst XRT's installed. http://www.bimmereyes.com/Photo_Gallery.html
It is a very easy installation for your model.
Hope this helps.