Thanks guys! I appreciate you all sharing your experiences.
Lucky13, you have a point about bent rims. I had four bent rims on my 2000 e46 wagon, and those were 7 spoke. I'm glad you like the beige! It does look dirty faster than black.
nospam, yeah, I probably won't need that increased top speed limiter
I did read about the Performance Control with xDrive, but I didn't like how heavy the hydraulic steering was with xDrive. It felt heavier than my e93 did. I also prefer RWD (as crazy as that sounds for a New Englander).
HottRodW, good idea. I haven't been on an old concrete highway since a long road trip to NY on I90, and it wasn't concrete until we crossed into NY. I remember the regular concrete segments and the pa-thump pa-thump, so I can imagine the M Sport dancing over those gaps.