2.Maintain Recommended Air Pressure.
If your tires are left on the wheels for storage, maintain the vehicle manufacturer recommended air pressure.

3.Select and Prepare What You Plan to Store the Tires In.
Storing your tires in bags (opaque and airtight) is recommended if you’re able to store your tires indoors. Lawn and leaf bags are often good for this task, sealed shut with a heavy-duty tape to help keep out the elements. Prior to sealing, try to remove as much of the air from the bag as possible, helping to prevent the tire compounds from drying out.