take it to local shop and let them check it out it's free at most shops
bimmersport will do it iam sure give them call ahead of time and i also took it to auto trend just call them like 1-2 hour head up and they will be ok
I usually make an offer saying that if the safety work estimate amounts to less than $x I will buy it. They usually agree to bring it to my prefered shop for inspection, and agree to stop showing it other people. All depends on what you agree x to be.