With fall on the way it came time to replace my rear training tire after it became very worn and finally suffered a fatal cut. For quite a few years I have used Armadillo Elites with great success. The last rear tire lasted 3572 miles (Yes, embarrassingly enough, I track this), and despite the fatal cut, I did not have a flat, only a long gash separating the <1mm remaining tread from the casing.
Some complain about the Armadillo’s handling characteristics, and I will surely agree, they ride like a pair of solid rubber wheelchair tires… Not the smoothest rolling, but I am always confident they will have adequate grip, and most importantly, last a long time with few flat tires to interrupt training miles (and the fewer ‘rescue’ calls to the spouse, the better!).
Another tip: Good things are rarely on sale. You can expect to pay $60 per tire which is about as much as a cheap car tire! To save on time, money, and effort, when the rear tire wears out, move the front to the back and put the new tire up front. My last rear may have lasted 3500+ miles, but I’ve had the front tire on the back now for 700 additional miles with plenty left to go. I have found the cost of good, durable tires to be well worth the time saved in buying more tires and the chance of fixing fewer punctures on the side of the road.
Update March 2011: The tire I had moved to the rear, mentioned above, lasted an additional 1000 miles for 1700 total on the rear and 4300 on the front. The sidewall separated from the casing leading to a fatal blowout (although a bulge warned me of this, I chose to ignore it for a ride on the rollers). There was less than 1mm of tread remaining and I will add the tire had flatted due to a thorn about a month prior. All in all a good life for a tire, so I just bought another just like it.