BMW E38 control arms and bushings
Where can you get good-quality suspension parts for the E38?
Lemförder and Meyle are mentioned as quality brands. In cheap eBay kits the parts are mostly unbranded, so check from the seller's listing whether the part is Meyle or Lemförder quality.
Can you get the E38 rear control arm's inner bushings separately?
BMW does not sell the rear control arm's inner bushing separately, and it cannot be found at parts shops either, so the whole control arm is usually replaced. Powerflex does not make bushings for the E38 rear end. The bushings can be custom made from polyurethane.
Which front control arms should you replace at one time?
When the steering starts to shake, the benefit comes from replacing the transverse and longitudinal control arms, tie rod ends, the middle part of the steering shaft, the steering damper bushing and the sway bar links all at once. At the rear, the upper control arms and the lower arm are checked separately.