I had a roaring sound on my 2005 Dodge Ram 1500 at speeds between above 60. Rather loud. Slower than 60 and the sound went away.
I do not remember the exact part that caused the issue but it was some plastic part on the drive shaft assembly that had broken. As the shaft rotated it caused this broken part to lift away from the shaft and strike part of the under carriage and cause the sound.
Shop replaced the drive shaft and sound was gone.
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