I agree with all of the above. Including the dealer saying "they all do". My 92 500 SL (USA) tracks slightly to the right depending on crown severity. On multi-lane freeways the crown changes from left to right as you go from inside lane to outside. On a three lane highway, my SL tracks left on the inside, nuetral in the middle and right on the outside.
My wife's 525i does not do it as much, but will also want to track slighty with the crown.
If all your suspension bits are OK and you had a 4 wheel alignment, you should be good.
I find it always helps to slam the throttle to the floor and go like hell every time I start to think about little stuff on this car!!!!!!
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roadkingmike@aol.com
Coast Aero Support Services, LLC
'92 MB 500 SL
'01 BMW 525i Sport
'98 Harley Davidson RoadKing
'74 BMW 3.0 CSi - Gone to a good home