I also lowered my xi about a month back. The only thing that I am not happy with is the way the shocks behave on large bumps. I am thinking about changing the shocks at this point to fix the problem slightly. Have you experienced this at all?
2006 Indianapolis Red E60 M5: 20x9, 20x11.5 HRE, SS exhaust coming soon
2006 Japan Rot E90 330xi: AFe CAI, Stygar SSK, ACS Body, H&R Sport