My stock tires have 8600+/- miles. The front is down to the wear bars and I need to squeeze another 850+ miles out of it. I have a trip to Atlanta next week and I don't want, nor have time to mount new tires before departing. This will be all slab and since I haven't ever pushed a tire too far past the wear bars, I was hoping some of you IB folks can shed some light on how far to bald you feel comfortable taking a tire. How soon to you start to wear to cords? I am well aware of the issue with rain but rain I can wait out. Thanks folks.