I have read many threads on the X's handling. I just spent the best $80.00 ever. I found that when the wheels were turned right to left the front of the springs did the opposite. From Energy suspensions I got a front spring kit and a sway bar kit. You need to tell them if you have the 30,32 or 36mm bar. Clunk is gone, she stay's in her own lane accelerating or braking. Ca be done in your driveway with a small bottle jack and a drill to get the rubber away from the spring. This is like getting a new truck.