I was browsing ebay for tires and came across several listings where the seller clearly stated that the tires were manufactured in 2011 and that they could not be returned due to age. IMO, they are probably OK, but one has no way of knowing the climate they were stored in and if they were exposed to sun etc. If buying tires at a retail location, l always check dates on all 4 tires before purchase. If by mail order, l usually buy new tire models that were recently introduced to avoid getting old stock.