In the last year or so there has been a discussion regarding aged tires. Specifically, when you purchase new tires there is a potential that those tires may be several years old before you install them. Some experts argue that new tires degrad while they are sitting on the shelf. Apparently, several deaths have been allegedly linked to aged tires. I have also read a number of articles that suggest that the total life of a tire (from manufacture to removal) should not exceed 5 to 6 years. Does anyone have a policy regarding aged tires? Also, does anyone require their tire suppliers to provide tires that are less than (x) years old?