Goodyear Endurance

[whutfles]

Maybe that's why you haven't had a problem - you didn't baby them. Maybe regular trips down the road is better for them than sitting in one spot? We used to have a Starcraft Folddown back in the 1970-1980's. We'd take a 2-3 week summer trip in it and then it sat in the garage for 11 1/2 months. We'd throw the entire tread cap off of each tire in the first 1000 miles the following year. It may have been because the tires developed a flat spot sitting that long.