Stored tires should be protected against environmental effects such as sunlight, high heat, ozone and other potentially damaging conditions. Weather checking/ozone cracking can occur during direct and extended exposure to damaging effects of the environment, such as ozone and heat from sunlight. Ozone cracking can also be caused by exposure to electric motors, welding equipment, or other ozone generating sources. Tires with severe weather checking/ozone cracking or any cracking that extends to the tire casing cords/plies should be removed from service.
Indoor storage is recommended, however if tires must be stored outdoors:
Tires mounted on a stored vehicle
Store the vehicle such that all weight is removed from the tires. If vehicle weight cannot be removed, unload the vehicle to minimize the weight. Maintain the recommended tire inflation pressure, including the spare. The surface where the vehicle is parked/stored should be firm, reasonably level, well drained and clean. Vehicle should be moved every three (3) months so the tire flex area is changed.
Returning tires from storage back to service
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