Audi Repair: 1998 Audi A4 Avant Quattro Wagon 2.8, wheel bearings, brakes and rotors

Question
My car is making a vibrating noise after having my front brakes and rotors replaced by Midas. When Im driving about 40mph or more it is louder. It is louder when im driving and move steering wheel to the left but doesnt make the noise when wheel moved to the right, any advice? I plan on taking it back to Midas in case they did something to it. the car has 91000 miles on it and iut did not do this until i had the work done on it. Please help with insight, Thank you

Answer
Sounds like one of the front calipers is not functioning properly.  Perhaps the pistons were not cleaned correctly and therefore not retracting to release the brake.  I would return to Midas and let them rectify the problem.  Could also be that the wheel bearings need checking.