just wondered if anyone can help with a very frustrating wheel vibration on a 1998 E39, the car has done 70,000 and i have upgraded from 15" to 17" wheels but have had the problem with both, both sets of wheels are true and tires are ok and i have experimented with pressures. I had the front control arms and bushings replaced and for the first time in 12 months the vibration (between 50 - 55mph) disappeared only to now appear between 75 - 100mph, it shakes really bad despite being balanced 'again'. It seems the only thing left is the shorter side control arms & bushings which are the originals.
can anyone suggest anything else before i spend Ł200 on these arms, i have been assured my steering rack is ok.
any thoughts much appreciated