My limited experience with vibrations that shake the sreering wheel while braking have proven to be none other than rotor warp caused by Over and/or Uneven wheel nut torque. My duratec Mystique had new rotors, a new tie rod end and it still vibrated/ shook while braking at highway speeds.
Several weeks ago this topic was raised. The solution proved to be front wheel retorquing to as close to 75 ft/lbs as possible. It's sometimes as simple as that. In my case, the vibrations have completly disappeared after just 2 weeks of daily use. In the current case the tires may also be out of balance and ppossibly a wheel could have excessive runout. This is a cheap fix and should be tried before spening big bucks on possibly unnecessary repairs.
Our vehicles are equipped with rotors that are extrordinarily sensitive to uneven and excessive wheel nut torque. When you re-torque the wheel nuts be sure to clean the wheel holes with a very slightly oily rag so when they are torqued the wheel nuts will all slide to an even torque on each stud and don't go beyond 75 ft/lbs.
Regards!
John
