My wife took her 2013 Mazda CX-9 (FWD) in for a recall on the lower control arms. They replaced the arms, aligned it, and rotated the tires. She claims that shortly after that she could feel a vibration in the steering wheel. She drove it from New Orleans to Florida, and by the time she came back said the car was terrible. I drove it today, at low speeds ( <20 MPH) the steering wheel shakes. There are no unusual noises. The shake gets worse until you get on up to interstate speed, and the shake becomes more of a vibration. The vehicle does not pull to either side when driving or braking. I have looked at the front tires, and one seems more worn than the other but I cannot see and obvious bulges or flat spots. Any hints before I take it back to the dealership? I just don't believe the problem is related to the lower control arms replacement or an I wrong?