Great pics.. I took my LT through there a few years ago, bought a Sturgis T-Shirt too! Then ended up giving it to my brother.
The roads out there are great. I hit as many of the roads around and through the Black Hills as I could, in two days. (Black Top only on the LT, Ha!) I was there after Labor Day, so the crowds were gone, the roads were open, all I remember thinking was, "no wonder everyone wants to ride out here." Just great roads, and beautiful scenery.
Are you still out there? There was a road that went straight up into the hills from the BMW shop that was one of the mechanic's favorites, it was a good one also..
Ride safe, let's see some more pics!
Also, not sure how you are coming back, but I took a road that runs east west, just south of the SD border, in NE. It went thru Ft Robinson..
Nice route if your looking for something different. Also, I went by Wounded Knee.. Sort of disappointing..