Tires squalling help

Ok. Ive recently rotated my tires and put the ones thats always been on the back on the front. ( still running the factory dunlops) i never noticed them makin any noise until that. I took it and had a front end alignment done on it and everything was fine. Nothing out of align. Could it be just those junky dunlops or is there a bigger issue here? Like i said the ones that was on the front never made any noise that i can recall. Anybody else with this problem?

 

If it's during tighter turns in a parking lot, probably either low air pressure in them or the tires are just getting old.