Depending on the date code molded into the tire showing when the tire was manufactured, those tires are at least 6 years old. If your a gambling person, you get to decide if you think a 6 year old tire that has not been used and those tires have been just sitting are worth the gamble. When a tire fails, the damage a tire can cause could cost many times more than the cost of the tire.I would buy new, list the used ones on some site for sale and recoup some of the cost for the new tires and go travel with one less worry about if your tires will make the trip.