I went on a drive with my wife last night and after our 2 hour drive, I heard a strange sound while going over a bump in the road. It wasn't a speed bump, just a imperfection in the road. The sound was something like a combination of a thud and a squeak (almost like a quieter bottoming out). It sounded like it may have come from the inside, so when I got home around 2am, I checked the shock tower bolts (all fine). I crawled under and checked all of the bolts I could get to (wasn't able to check the rear trailing arm-to-body bolt) and found my toe adjustment bolt just loose enough to move. I tightened it the best I could and now I'm going to have to get my alignment checked. Would the eccentric bolt being able to spin cause a noise during compression or would it just wear out my tires? I did check for play in the rear wheel while the car was on the ground, and everything seemed fine.