could be swaybar endlinks, could be thrust arm bushings if you did not install them the right way, which is to lower the vehicle preload than tighten that big bolt that goes through the bushing. could also be you front lower arm(wishbone). replace each pair of parts seperately to determine what the culprit is. good luck

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2001 X5 4.4i WHITE-Loaded like a baby's diaper SOLD