Tires that came on my jeep liberty that I towed had same problem. Wore spots in, could never keep tires balanced for long. I drove my jeep dealert to drink with my complaints. They alligned the front end and balanced my tires numerous times for no charge. Finally the tech that was doing most if not all the work came to me and said" if you buy new tires your problems will go away. I bought new tires, not goodyear and never had another problem. In fact I wore out two more sets of tires without any reoccurence. None were goodyear