Innovations and Milestones in Tire Technology

This basic structure persisted for decades, with diagonal fabric cords called 'plies' forming the bias-ply tires. The major breakthrough was Michelin's 1948 introduction of steel-belted radial tires, with cords positioned at 90° to the rim, optimizing durability and handling. Radial tires offer reduced rolling resistance, longer wear, and improved steering, though they cost more to manufacture. In the 1970s, Pirelli popularized high-performance low-profile radials, revolutionizing tire options. The advent of tubeless tires in 1955 by BFGoodrich marked another major leap, offering safer and smoother rides by sealing directly with the rim flange.