Went to dealer on the 3rd... They kept it over night... The problem was the locking mechanism on the rear hatch, it was loose. They replaced it. No more noise--- not one little peep, nothing. Noise found and fixed. Hope this helps anybody with the same problem... As far as the noise 20-60mph... Dealer says it may be the tires since there run flat... I'm going back next week for a second opinion... 2008 4.8i black saphire