Well, the mechanic said that the arm that was replaced should/does not affect alignment. There is another upper front rear control arm that if changed will affect alignment.
"Front position of rear wheel carrier : Referred to as a Guiding Suspension Link by BMW"

They marked all bolts etc and replaced as close as possible. He recomended to do an alignment and another balance because i have been driving like this for like almost 2 months but at slow speeds ie under 60mph. but he said its possible there is some tire wear that is not easily noticable by eye and it can cause a bit of vib plus the alignment could be off also.


I think if i drive as is for a week or so i should be able to see if it gets worse or if i see any tire wear....I hoping that nothing happens and ill get a balance then and ill be done with this crap.