Old tires and old steel rims! If the tire rims are not damaged, they are replaced just because the tires are aging and the rims are bumped and affect the appearance. The old ones can be sold for tens of dollars, and they can also be recycled and reused. . Even if a piece of the steel ring is knocked off in the middle, it can still be repaired. After re-painting, the appearance will be the same as the new one. But if the steel ring is deformed or the edge is knocked off, it can only be sold as scrap metal.