THE DARTS BREAKS STARTED TO FLUTTER AND THEN FEEL WARPED. UPON REMOVE THE ROTORS WERE IMPERFECT BASED ON POOR QUALITY MOLDING/CASTING. THE BACKSIDE OF THE ROTORS HAVE GOUGES WHERE THEY HAVE RUSTED BUT THE BREAK PADS HAVE NEVER TOUCHED AND IN SOME AREAS THE CASTING LOOKS LIKE IT POOLED AND COOLED DIFFERENT THEN THE REST OF THE ROTORS... VERY CRUDDY AND NASTY ACROSS THE ROTORS. THE CAR STARTED THE ISSUE WHEN IT ONLY HAD 10K ON IT AND IT NOW HAS 17.5K AND IS GETTING WORST.