[Tommy]

First, I'm no expert. But I have vehicles that I have owned a long time and I've faced this same question before. ... The prevailing tire industry recommendation is that tires be replaced not later than ten years after manufacture. The logic is that the rubber compounds change over time and the sidewalls become increasingly likely to fail. ... Ultimately its a question of how much risk you are willing to take. If you seldom drive hard or fast, and an abrupt blowout would not likely cause a catastrophic situation for you, then maybe you can stretch your tire years a bit more. But if you sometimes find yourself driving at 75 MPH surrounded by large trucks, then maybe sooner is better than later. ... My personal limit on my high performance cars is seven years.