Hi everyone, long time reader and first time poster. I've owned a 2006 650 convertible for 2 years now and have an issue with my am radio. I listen to the sports talk am station a lot and notice after about 20-30 minutes all am radio stations go dead. Meaning no sound at all. When I switch to the fm version of the same am station, it also goes blank. But fm still works fine. Anyone else ever have this issue? I'm thinking the am antenna in the trunk over heats. I took off the cover in the trunk and the am antenna was very hot, but not the fm antenna. Trying not to take it into BMW as I know it will cost me an arm & leg. Any advise would be very much appreciated.