I never roate my tires on my 2003 Toyota Echo (front wheel drive) since new. Now with 49k miles the factory Bridgestone front tires wear near to the minimum safty tread marks. The rear tires still have some tread left. I am thinking of rotating the current rear tires to the front, and put a pair of new tires of different brand to the rear since the traction in the rear is more important for safty reason. Is this arrangement OK?