The directional guidance from the Plymouth tie rod is how your front wheels change direction. This steering component has threads at one end that is attached to the inner rods or steering rack, and a ball joint and stud on the other end that attaches to the center link and/or spindle. Each end of the tie rods that are mounted on your Plymouth has very different responsibilities. The threaded end is the adjustment for the toe setting of the front wheels. It is the treaded portion that moves this adjustment so the front tires do not prematurely wear. Unless your Plymouth is in an accident and the treads are damaged, this end will never just wear out and cause this steering component to be in need of replacement. The end of the Plymouth tie rod with the ball joint is the end that tends to wear out over time. This occurs because of the force that is exerted against this ball joint to maneuver your vehicle. The ball joint over time becomes loose in the socket where it is mounted. This can be noticed if an inspector grasps the tie rod and notices the extent of the play it has. If movement inside of the socket can be felt, it is time to replace this steering component. Sine both tie rods will have been on the vehicle for the same period of time, the owner of the car can expect both of these steering components should in or near the same condition. Remember the threaded end of the tie rod on your Plymouth is the toe setting. When removing this end the number of turns it takes to remove it should be recorded so the new component can be put in the same position on your vehicle.