Storing and protecting your tires
Because tires are highly engineered products made from a variety of materials, they should be protected from overexposure to heat, light, moisture, ozone and deformation while they’re being stored. Remove the tires from the vehicle, place them in plastic bags, and stack them in a cool, dark place. Tires lose air over time, and leaving them on a vehicle and in contact with the ground for an extended period can result in permanent flat spots.