If you know the car is straight and everything is in order then it is the tires. my wheel is off set to the left. it was straight until I did a tire rotation, when my father switched to snow tires we put his good, straight set of wheels and tires on my car and the wheel went straight, then we put my wheels and tires back on with a tire rotation and the wheel went to the right, we found the car is very sensitive to tires, make sure yours set is good
Michelin Pilot XGT H4 are my suggestion, they wear kinda fast but handle great

Son - 1995 Mystique LS Zetec 5-spd --> newest "mod" -> a girlfriend by my side
Father - 1995 Contour SE Duratec 5-spd
Mother - 1999 Contour SE Sport Duratec 5-spd

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