I recently picked up my 2011 328i (Titanium Silver/Gray Dakota, SP, PP, heated seats and wheel, satellite radio) and I love it. It the fourth BMW I've owned, and like my previous models, it's awesome. However, I've noticed that there seems to be a substantially lower limit on the highest volume of the radio (BMW Professional). Has anyone else noticed this issue? It's a problem if you're driving with the windows down and still want to be able to enjoy your radio. Also, does anyone know of any available fixes (i.e. after market amps, etc.) and the cost involved? Thanks!