To properly store your MINI John Cooper Works Paceman for an extended period, it is recommended to park it in a dry and well-ventilated area, preferably indoors. Before storage, ensure the vehicle is clean, inside and out, and apply a quality wax or paint sealant for added protection. Disconnect the battery or use a battery maintainer, and inflate the tires to the recommended pressure. It is also advisable to change the oil and filter before storage to prevent any contaminants from sitting in the engine.