My stock tires lasted around 8000 miles. I'm on my third set of Avon Venom X tires. They don't last very long with me, usually about 6000 miles. The front doesn't wear as fast but it is pretty close to the rear in terms of wear, close enough that I usually replace them at the same time. The extra few hundred miles I could get out of the front tire isn't worth dealing with the tires twice.
Needless to say, I'm tough on tires...
