Goodyear and/or Maxxis owners

I believe that both are good tires. When I got my 2006 Airstream in 2009 it had the original Goodyears on it. It was very lightly used spending most of its time parked out in the sun. The following year I noticed a significant bulge in the tread, not the sidewall, the tread. I replaced them with Maxxis and have had 4 years and about 20K miles of good use out of them.

I think it is important to get your tires from a reputable dealer, keep them inflated properly and inspect them regularly. Goodyear is a big name and Airstream still puts the Marathons on their trailers.