How to share and use information in a supply chain to improve operations planning and control (OPC) in the automotive industry is explored from the viewpoint of suppliers. The purpose is to investigate how context characteristics from portfolio models can be used for information sharing purposes and explore how intended usage of shared information at a supplier is connected to context. Case research of five suppliers revealed context characteristics that define the intention to use shared supply chain information. Information sharing differentiation through supplier relations clustering is presented as propositions and can be empirically tested in further research.