As Bob Lincoln mentioned before, always check the date code. I believe the exception is a year, any more than that and there's an obligation for the selling outlet to take a return on them. For those that don't know, the date code is located on both sides of the tire side walls, on the same line as the "DOT" marking. It's encircled and has four digits, the first two being the week of the year and the last two being the year of manufacture. Eg. (2704) This tire was manufactured on the 27th week of 2004. There's been more than one person sold NOS tires. Be an informed consumer. If you're into buying used tires, which is common in my area, be especially careful. If you are buying new tires for a daily driver, it's likely that they'll be spent before they become out dated. However, if you are buying tires for a stored vehicle/weekend driver or a motorcycle, tire dates are critical on purchase because you probably will be keeping them for the full duration. If I buy motorcycle tires online, I always add a note to inform that if they ship me tires that are more than a year old, I will be returning them. I hope this info helps.