https://www.stackshelves.com/products/tire-storage-rack/ The tire storage rack for sale is composed of a chassis structure and guardrails on both sides. The guardrails on both sides can be folded flat on the chassis. The chassis is made of square tubes and welded together. The structure is solid. The chassis can choose whether to add iron plates as needed. The surface is made of electrostatic spray plastic, which is environmentally friendly and beautiful. The size, style and color of the truck tire rack storage can be customized.