Avoid direct sunlight
Ultraviolet light causes rubber to degenerate. Store tires in a dark place under cover to avoid direct sunlight.

Avoid rain and moisture
This can cause the rubber to deteriorate and the steel cord inside the tire to rust.

Avoid heat and oil
Rubber absorbs oil, so make sure the tires are wiped clean before storage. Also, hot environments accelerate rubber degradation, so be sure to keep the tires in a cool place.

Avoid electric sparks from equipment
Ozone from motors or batteries causes rubber to crack.

Do not store directly on the ground
Make sure the tires are not touching the ground by placing cardboard or a wooden board between them and the ground.