I have lowered my Z3 3.0 by 30mm. It would seem the best thing to do is allow a few weeks for the car to settle then have the tracking/camber checked with a laser align. I'll definately have the tracking checked but there is no camber adjustment front or rear, so is there any point in having a full laser align? I know there are camber adjustment kits available but is it needed with a 30mm drop? :-?