I got these Rouge engineering upgraded bushings from Haroild at "HP Autosport" and man am I glad I did. The differece is quite huge, like going from OEM to M3. I immediatly felt the difference when turning left to right, car feels a lot more planted and much tighter. If you want to skip the tutorial any shop can press these out and in within minutes. Tips: 1. Push bushing 1/2 way out then use a 2-3/4" hole saw to push out....will come out in 5 seconds. 2. When installing car does NOT have to be at ride height like below install link because of the design of the new bushings. 3. Use torque specs from my install link below not Rogue Engineerings, they are a bit incorrect. 4. When installing insert ball joint end 1st. Tension arm Install/removal link: (follow only the upper control arm/tension rod install removal). Ignore ride height suggestions. http://www.bimmerboost.com/showthread.php?35179-M3-Upper-amp-Lower-control-arms