How to extend the life of folding bicycle tires?

Mostly middle of the road high on both sides of the road is low, when the folding bicycle driving, we must rely on the right. Because the left side of the tire wear was often worse than the right. Also, because the center of gravity by the rear wheels generally wear faster than the front wheels. If, after a period of use the new tires, the front and rear tire replacement use, and swap the left and right direction, so you can extend tire life.