According to BMWUSA it does have AM radio.
Audio system
Anti-theft AM/FM stereo CD/MP3 player with Radio Data System (RDS)
http://www.bmwusa.com/Standard/Conte...s/default.aspx
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2016 750i X-drive
2017 GMC Sierra Denali
1997 MB SL500, 19"AMG replicas
Past BMWs: E30 323i, E36 325is, E36 M3, E46 M3, E39 M5, E46 325i, E90 335i, F80 M3, F87 M2