See Figure 1
The proper alignment of the rear wheels is as important as the alignment of the front wheels and should be checked periodically. The rear wheels are adjustable for both camber and toe. If the rear wheels are misaligned, particularly a toe-in error on one side, the car will exhibit unpredictable handling characteristics. The usual symptoms include a different turning responses into left and right corners and difficulty in maintaining a straight path, both due to the rear wheels attempting to steer the car. This rear steer behavior is particularly hazardous on slick surfaces; the back wheels of the car may attempt to go in directions unrelated to the front during braking or turning maneuvers.