Comparative Study of Polyurethane, Thermoplastic Polyurethane, And Ethylene Vinyl Acetate for Enhanced Ride Comfort in Airless Tires

Airless tires, designed to operate without air pressure, offer durability and puncture resistance but struggle to match the comfort of traditional air-filled tires. The cushioning effect provided by air is crucial for absorbing shocks and vibrations, which airless tires must replicate using alternative materials. This paper proposes the best of three advanced polymers—Thermoplastic Polyurethane (TPU), Ethylene-Vinyl Acetate (EVA), and Polyurethane (PU)as potential solutions for improving ride comfort in airless tire design. These materials are evaluated based on their elasticity, shock absorption, and vibration-damping properties, which are essential for enhancing comfort. By integrating these polymers into the structure and tread, the study compares their ability to provide cushioning, reduce road vibrations, and improve overall ride quality. Additionally, their lightweight nature helps reduce rolling resistance without compromising durability. A detailed analysis is conducted to determine which of the three materials delivers the best performance in balancing comfort and durability. The results of this research provide insights into the most promising polymer for advancing airless tire technology.