Yesterday, I had my Euro spec 728i (e23) in a local alignment shop for a front end align after install of Bilstien sport shocks. This particular shop is owned and run by a total gear head who always has a variety of cars in there, muscle cars, customs, race cars, high-end europeans, jacked up 4x4s, you name it. I have not had reason to get my X5 aligned yet, but I would not hesitate to take it to him, he knows his stuff.

There is no reason to insist on a dealer alignment if you can find a good indy shop.
Some dealers send their cars out to an indy shop for alignments anyways....