Old tires, what a bummer. My travel trailer has maybe 200 miles on it, but the tires are 5 years old. I'd put them to use on a yard dog trailer, but I'm going to put new tires on the trailer before I take it on the highway again. Too much at risk. Same with the tires on my truck. They have only a few more miles than the trailer's tires, but are coming up on 5 years old. Again, not worth the risk. Going to be an expensive camping trip coming up.