I bought a 96LT-4 convertible two years ago with what must have been a NOS set of Goodyear GSCs. They look almost brand new and had the tread depth of brand new tires. So the other day I was curious of their age and found out that the tires were all manufactured between 1996 and 1998. So now I need a set of new tires. I live in FL and only drive the car on weekends. I've only put about 6,000 miles on them in two year. No rain, no racing.