I am not sure what to say other than the alignment is off. If the steering box is locked when the alignment is done and the steering is straight then the car should go straight, hands off. Tires can cause this problem but if you swap them side to side the problem will usually go away, not pull the other way. I never understood why the problem goes away instead of pulling the other way, but I have seen it many times. The first time I saw this was after alignment on an old Buick Rivera. It pulled to the right, the steering wheel was not centered and I was not happy. The tech swapped the front tires and the problems went away.

Paul

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84 500 SEL (307,xxx miles)