I daily drive my 2013 Ford Taurus SHO and most of the time at highway speed. I have a shake shimmy that only shows it self while at highway speed mostly above 60 mph. My first thought must be the stock tires ....tires replaced still there ....took to Ford ....Ford did a Road Force Balance, Ford claimed it was fixed .....Nop still vibrating...I had a brake pedal vibration at high speed stopping or slowing down thought that could have been it so i replaced all 4 rotors and pads ...brake shake gone but not the overall vibration. Had a leaking PTU replaced ....still vibrating... Im at a loss, its really annoying especially since I spend most of my time at the speed in which it shows it self. I have done a couple google searches on the issue and there are many Taurus owners who are complaining of the same issue but none of the posts ever seemed to have solved the issue. Some posts even explaining that Ford claims its a "Characteristic of the vehicle"....bullshit...something is wrong. Anyone had this issue or can offer insight in fixing. It has been plagueing me for a while.