Weird noise after rotated tires

Whatever you do, don’t “take it to the car shop and give the guys the what for…” You might take it there and tell them what is happening. They will tell you what you’ve been told here - that this comes from tire wear patterns. Its as simple as that.

Any of this will be worse if - for example - your car was recently hit by a moving truck. Did anyone check the car’s alignment after this happened?