I prepared to make about a two hour trip with our 3070 Bighorn. First I checked tire pressure, which I always set at 5psi below maximum of 80 psi. I am always checking tires at gas stops, at the destination before the return trip etc. I inspected the tires before leaving on the two hour trip, the tires looked fine, with even wear. First fill up the tires looked fine, upon reaching our destination, I thought that the tire on the left front looked as though both sides of the very outside thread were worn down slightly, but I thought that the mud that I backed through made it look that way. But on the way back home, I could tell that the tire was wearing uneven, the rear left tire seems to be worn the slightly. Could it be that the last time I parked it, that the axles could have been slightly twisted, and by sitting that way got out of alignment?