What is the best way to store unused tires? Prevent rubber deterioration.

 

Avoid storing them stacked up lying flat on the side walls

If possible store them vertically with the tread resting on two rods or poles, make sure they are rotated regularly so the poles are always resting on different areas of the tread area and make sure they are kept in a dry cool place

 

Of course out of direct sunlight (UV), but also away from any source of ozone (02)which I do believe can be produced by basement boilers and the like..

 

George & Billy,
Thanks. I've also been told (Tire Rack - gave them a call today) to wash the tires with mild detergent and warm water and not to use any tire dressing (attract dust). I plan to wrap them in plastic (opaque or black) bags to further protect from UV and Ozone. Storing them in the attic vice the garage or basement.
Regards, <img src="graemlins/sleep.gif" border="0" alt="[sleep]" />