I have to chime in on this one, I put Goodyear Marathons on my previous trailer and got 4 years out of them with no problems. I just traded that one in and will need to replace the Towmax that came on my 2012 Laredo, I was planning on using the Goodyear tires on that one as well. I also bought the first set at Sam's, they ordered them for me and had them there in a couple of days. I was disappointed when I saw China on the sides of the tires, and until I joined some forums didn't know I was in the wrong towing at up to 75 mph for periods of time. Perhaps it was luck I never had a problem or I wasn't running close to the weight limits of the tires, I'm hoping to have similar results if I use them again.
Chris