I've been researching tire quality and costs all morning. The last set of 30 x 3 1/2 tires I ever owned were Wards Riversides, and that was back in the early seventies.
In poking around the internet, I find all kinds of quality control complaints with just about all of the manufacturers these days, mostly cracking of the sidewalls or splits between treads. Most of those postings were from 2009-2012 though. Has there been any improvement in general quality? 3000 miles doesn't seem like much mileage from a tire!
A couple of years ago I bought 5 Wards Riversides from Corker. I was pleased with them. My thought is that the scant number of miles most of us put on out T's indicate that the tires will probably dry out and crack before they wear out.
All tires have a life-span. All should be inspected regularly and replaced as needed. The best modern tires on modern cars probably have a life-span of 5 years or so. Same with T tires. It's a question of the rubber drying out and cracking due to flexing, not a question of tread wear.