2006 FORD MUSTANG User Comment / Complaint

Starting at approx. 50mph i experience a shimmy in the steering wheel, most of the time. from time to time it will not shimmy when i reach the 50mph but as soon as i stop and start again the shimmy returns. i took it back to the dealer and all they did was balance the tires and did not make a difference. so i have had the car aligned, tires/rims force road balanced, new rotors, brake pads,bearings checked and still have the same shimmy. dealer will not help and i nor anyone else knows what to try next.