Your first mistake was buying a car registered in the Bronx. The roads in all 5 boroughs could shake apart a Abrams tank after 180,000 miles. 

So you bought a 180,000 mile Bronx M5 and were shocked that the control arms and suspension were shot? NYC cars feel like that after 40,000 miles if not taken care of.

You have to be a special kind of self hating masochist to buy an 182K E60 M5.... IN THE BRONX! Or just dopey. Were you the only one on the planet who did not know how that would go?