CADILLAC TIRE NOISE

I Have A 96 Cadillac Deville And Everytime I Go Over 46 Mph I Hear A Thumping Noise What Could It Be? I Have Check To Make Sure My Lug Nuts...

Recently Got A 2000 Dts, Had To Replace Driver Side Wheel Bearing So I Know This New Noise Is Not A Wheel Bearing. So From What Sounds Like...

What Do You Think Is Most Likely Wrong With The Car? And How Can I Stop It From Making This Noise As Soon As Possible? Ok, So Tonight I Was...

I Took It To The Dealership And Had The Brakes And Rotors Done. After About Five Days The Noise Returned Only Worse. I Took The Car Back And...