Road trip and two blow outs on Goodyear Marathons

When I was running my Marathons and had my blowouts where they delaminated I was pulling a 6,000 trailer (5K empty) at between 60 and 63 mph. It was a hot day, around 90 degrees. I lost two Marathons in three days. I think Good Year discontinued them after numerous similar complaints.

Let me use an old Military expression, " I would rather have a sister working in a house of ill repute than a brother running a set of Marathons on his trailer.