I am pulling a Kwik Kamp camping trailer. Empty weight is about 350 lbs and cargo is less than 100 lbs. I put new tires and rims on it just before I left New Jersey for my Northwest trip. I was just West of Salt Lake City today and one of the tires disintegrated. The center of the tread was worn out. The other tire also had some worn spots in the center of the thread. I had been running about 25 psi as was suggested by some board members and was monitoring the pressures via a TPMS. I got them both replaced but I can't figure out why these tires wore out so quickly. Was I running the wrong pressure for these tires (4.80 x 4 x 8 )?