You have to go into manual tuning mode. Get it to lock on to the first HD channel (92.1-1 in your example), then manually tune up one notch. Don't use the idrive knob, use the buttons on the dash by the CD/DVD player.

Yeah, I know it's a stupid setup, but that's how it works. I can't find a way to store the "2nd" HD station, either.

Anyone else figured out a better way?

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2008 X5 4.8i, Jet Black, Tobacco Nevada leather & just about everything else (no vent. seats, no 3rd row)