I am afraid that I am a little behind the curve on Goodyear Marathons. I had a set on my 2008 boat trailer for 8 years without any trouble at all. Then one failed sitting still over the winter. I replaced the tire with some other brand, and drove another season. Then another one of the Marathons had sidewall cracks, so I replaced the other three tires. Did I just get lucky? In the case of our Minilite, the Constancy tires have now gone 4 seasons and 15,000+ miles. If we keep this unit, 4 new Endurance tires are going on. Jay.
2016 Rockwood 2504s.
TV: 2014 Silverado 1500 double cab.