Noontidal said:5 years, and somewhere around 1000 miles. No real flats. They are GearX Evolution (if that means anything) kevlar tires. I did accidentally ride over the broken glass of a bear bottle a couple weeks ago, heard a terrifying glass-cracking noise - but no broken tire/tube, whew. I do have to top off my air roughly every two weeks.
Seriously? Air only every two weeks? That sounds like a pinch flat waiting to happen (unless you weigh NOTHING). I am pretty light myself, and air up my tires to 100lbs before EVERY RIDE (ie, every day). . . . or at least every other day. . .
I recommend this to everyone. You don't want to be riding on underinflated tires. Not only does it increase your chances of a pinch flat, but it also increases your rolling resistance.