DO NOT ROTATE YOUR TIRES BY WAY OF TAKING THE TIRE/WHEEL ASSEMBLY OFF, AND MOVING IT TO THE OPPOSITE SIDES...
correct rotation of non-directional tires would be to mark the outside wall or each tire, then removing the tires from the rims, and remounting them with the 'mark' on the inside... this would allow you to have the former right side tire on the left, and vise-versa for the opposite side... now your tires would hit the road and spin in the same direction as they did originally...
tires take a 'set' in a few hundred miles, and if you do the above, you risk your tires developing serious issues... NO, i am not a tire guy, but we have a Michelin engineer that rides with us, and he's informed us of many issues with tires...
Dan P
SPYD3R