next would be upper control arm bushings. All that shaking may have either caused their demise or is the result of their failure.If you have an aftermarket wheel set you may need hub centric rings between the wheel hub and wheel.That fixed mine, for a time but its back immediately after replacing the rotors and pads which is really confusing. I'd almost think one of the rotors wasn't true and i guess i may have to have them checked. I had my wheels off and spun and the rims were OK but the wheels were unevenly worn.Though this is true it was true before doing the rotors so why weren't the bad tires causing the 50-60 mph warble then i ask you?