How to extend the life-powered bicycle tires?

Roads are mostly high in the middle of the road on both sides of the low, when the Electric Tricycle is running, must be on the right side. Thus, the left side of the tire wear was often worse than the right. Meanwhile, the center of gravity against the rear wheel generally wear faster than the front wheels. If new tires in use for some time, after the room, the front and rear tires exchange use, and swap the left and right directions, so you can extend tire life-battery powered bikes