If one knows how to read tire date codes, then what is the oldest tire manufactured date code, one should accept when buying new tires? One year, two years?
Two years. It isn't uncommon to find a two year old tire in inventory. This is due to manufacturing, shipping to a warehouse, then distributing to a retail outlet which can consume several months. Add to that the time it takes for someone to need that particular tire and it is often between one and two years. That would be on the less popular styles but on the really fast movers, I would expect not more than six months in most cases.
Special Video!
Rare footage of Pat Goss on his weekly television series as seen on former Channel 8 every Saturday at 9:30am. These two episodes dealt with The Excel Institute in Washington DC. See http://www.theexcelinstitute.org/ .