Originally Posted by rekit
I always thought that to a degree tire degradation was a factor of sunlight exposure, not age. The tires on a classic car stored in the garage tires would age better than a DD. Yes or no?
Yes, sunlight is a major factor for tires cracking prematurely when mounted and pressurized. Stored in the garage out of daylight is much better, but still the fact that the tire is mounted, has air pressure and has the vehicles weight on them still puts a wear factor on them.
Tires not mounted, stored in the dark, no light at all will last along time, but rubber does change durometer over a long period of time, can't change that.