I think a lot of people do not check the made dates on their tires - you can buy a new TT, but the tires maybe 4 or 5 years old when you buy them. Air pressure means the life of the tire. In my years I have blown tires of many makes, regardless of my precautions. There are some excellent tires made overseas - in fact very few are made in our USA, it is a dam shame.Goodyear and cooper have some made in the USA, I would still check the made on date.I buy a new tire I want a new tire, pay no mind what a sales mqan may tell you, he has no interest in you only his pay.