I’m having an issue with my 2009 is250 and I was hoping to get some insight into what the problem might be. I recently started hearing a metal clunking/rattling type sound and I’m hoping to diagnose the problem. The sound is coming from the front, passenger side and it’s making noise every time the axel rotates around. For example, the faster I accelerate, the faster the metal clunking type sound occurs. If I am on a very smooth road, I hear nothing. The more bumpy the road, the louder the sound is. Also, when I am braking, the sound goes away even if the road is very bumpy. Further, the sound is a lot worse in the early morning when it’s cooler outside. Does anyone have any idea as to what the issue may be? Any insight is greatly appreciated!