This document summarizes the functions, classification, materials, and advantages of different types of tires. It discusses the functions of tires as supporting vehicle load, providing cushioning, transmitting driving and braking forces, and enabling steering. Tires are classified as conventional tube tires or tubeless tires. Common tire construction materials include rubber, steel, nylon cords, and bronze-plated steel. Tubeless tires offer advantages like lesser weight, better cooling, lower rolling resistance, and improved safety compared to conventional tube tires.