So. You're headed off to the Trinity Alps in northern California for 4 days of blissfull corner strafing on the tight, technical curves up there. You look at your tires and think, "yeah, I've got a couple thou left in them."
Don't be an idiot. You want to take the ride? Pay the price up front. Instead of finding this in the middle of the second day, and then spending Labor Day in a Motel 6 in Yreka until the U-Haul place opens on Tuesday, so you can pay a couple hundred bucks to take your bike up to Medford, Oregon, for a new tire.
As you can see, I only got a bit over one thousand miles, and that was pushing it. I was very disappointed. So, take a hint from me, splurge for the new tires and have a great time wearing the edges off them!