bridgestone run flats help

I have been reviewing the many threads about the roaring noise from these tires..About to go down the long road with the dealer..x6-5.0 7 months old, 12,000 miles all most all hwy. In December 2011 with 10,000 miles on the car driving down south thought I had a flat tire on the left....front. Roaring so bad you cold feel the sterring wheel vibrate. This happens between 35 to 45 miles an hour...This is consistant with all of the other threads about these tires. Tire presure has been kept and BMW alined front end just before that December trip. Any advice from you folks!

I have the Bridgestone RFT all season and no noise so far but I only have 300+ miles so far.