How long on original tires?

[rsnider]

I have an 03 that was built at the end of February. I keep the car garaged 95% of the time. There are not signs of cracking or drying but I worry about the tire coming apart at high speed. I live in a warm dry climate and only drive the car occasionally. The car just turned 23k.

With such limited ultra-violet light exposure should I worry?

I might not understand the explination, but I'm looking for someone with engineering background (or at least a few years under their belt at Discount Tire and a technical background with tires).

I sure don't want to have a mishap at the track or on the freeway.

Can anyone help?