I failed to replace the control arm myself. I unscrewed the two screws, but I was not able to get the control arm off from the rotor side, it was so damn tight, I tried to use hammer to tap it, no use, still very tight. After about 2 hours trying to get it off, I gave up becuase I did not want to damage anything else. I reinstalled the wheel. I will go out to find a garage to complete the work. Very frustrated.

__________________
--2004 E53 X5 4.8is - ECE version; right hand drive; Located in Hong Kong; ext. black sapphire metallic; int. leather black; adaptive dynamic bi-xenon headlights; 16:9 onboard monitor w/o navigation; 20" genuine BMW Y-spoke 214 wheels with Bridgestone Dueler H/P Sport tires; Int. rear view mirror w/ compass.