Abstract for: A Conceptual Framework for SD-Based Recommendations to Enable Cross-Industry Circular Economy Material Flows in the Tire Sector

The global tire industry is under mounting pressure to adopt circular economy (CE) strategies in response to environmental challenges, material scarcity, and evolving policy frameworks. This paper introduces a conceptual, multilevel framework that integrates materials science, product development, and system dynamics modeling to explore circular transitions through a distinctly cross-industry lens. The framework focuses on two cross-industry innovation approaches: (1) waste-to-tires, which evaluates the use of renewable or waste-derived materials from other sectors as alternative inputs in tire production, and (2) used-tires-to-products, which investigates the repurposing of end-of-life tires (ELTs) into new applications across diverse industries. Organized across material, product, and industry/company levels, the framework enables the iterative development and testing of sustainable business models, informed by laboratory testing, stakeholder engagement, and dynamic policy simulation. This cross-sectoral approach facilitates the identification of synergies, supports resource efficiency, and enables scalable CE solutions. The framework serves as a practical and strategic tool for researchers, policymakers, and industry stakeholders aiming to implement circular innovation in complex value chains.