Just purchaced a new Mazda 6 hatch, when traveling with people in the back seat my rear tires rub when hitting bumps or when turning a corner too fast. Any one else having this problem? If yes, what did you do?

I had my wheel wells and fenders rolled in the back

THIS DOES OCCUR-THERE IS A SMALL LIPP ON THE PLASTIC INNER WHEEL WELL THAT MIGHT BE RUBBING (PASSENGER SIDE)FILE THAT DOWN FLUSH

IF THATS NOT IT I ADVISE YOU TELL THE PEOPLE IN THE BACK TO LOOSE WEIGHT---JUST JOKING:D

does your vehicle have to factor wheels & tires on it?