I'm in the TBD mode right now right at 40,000 miles. I'm getting a semi-clunk over potholes, almost always in cold weather though. It actually sounds more like a chirpyclunk. At first I thought it was the rubber grommet on the tailgate or something. Pretty sure it'll turn out to be the LCA though. I also didn't expect it so early. The arms in the LR3 I had lasted til about 70000.