Recently I took my car to get an alignment at a tire shop. I noticed that the car was pulling left at any speed. After the alignment the car pulls left above 45mph. The tire shop sold me an alignment and said that both the front and back were out of alignment but it wasn't possible to adjust the back and there was nothing to do. So since it's still pulling I'm thinking it's the back side that's causing it to pull? Or do you guys think it's a tire balance issue?