when i purchased my 1995 (4/94) 540i/a last year i learned about the thrust arm bushing issue due to the car shaking at 55-60mph. i purchased a set of arms w/"750il" bushing, center link, & tie-rods from FCP Groton in ct. they claim the parts are made by TRW. i have them installed one year & 16,000mi. and the 55-60mi. shake is back. after looking at the suspension on the rack my friend (a mechanic of 30 years on foreign cars) believes it is the bushings again due to the large amount of movement within the bushing & also the center link has to much play in the joint at the idle arm. the idle arm appears to be tight but i am planning on replacing it also. did i get ripped of from "FCP Groton"? the thrust arms appear to be fine besides the bushing. should i just replace the bushings again & use the TRW arms or should i replace the arms also? i have the bmw arms but the ball joints are bad. i am looking at using eurthane bushings. what is my other options for bushings & where should i get them. bmpdesign has the eurthane bushings for $90.00.
i also purchased a brake booster at the same from FCP Groton & it does not appear to boost as much as the original.
should i complain to FCP Groton or is it a waste of time?
thanks again
tim s.