Originally Posted by
cyccommute
There are additives but they can only slow down the problem. Another issue is ozone concentration. How and where it can form is dependent on many different factors. Being near electrical motors almost guarantees high ozone levels but there are lots of other opportunities for ozone formation.
Exactly correct. Store the same type of tire next to a furnace and in a dark, cool cellar, the one by the furnace is likely going to crack much faster. Some good information here on the ozone process:
Technical FAQ: Taking care of unused tires | VeloNews.com