Originally Posted by J. Patterson

This is a bit hard to put into words but I will give it a try. As the steering angle increases towards full lock in either direction the angle between the tie rod and the steering arm on the hub becomes less acute. (closer to a 180° angle rather than a 90° angle.) This being on the inner side since the rack in our cars is behind the axle. This changes the effect of slack in the joint of either the inner tire rod end or the outer tie rod end. Any slack that occurs in either place will be amplified or at least more easily noticed because of the extreme steering angle. As stated earlier the easiest way to check it is with both wheels off the ground and rocking the wheel back-and-forth while watching for slack at the tire rod . It will be more difficult to see it at the inner end due to the accordion boot that covers that joint. Keep in mind that this slack can also be caused by worn control arm ends. Anything that allows the hub to move. Good luck!