I am not going anywhere yet. I am trying to get as much info as possible to make an educated decision. To my simplistic mind "over inflating" a tire is just wrong. But trying to keep and open mind
I was actually expecting the Good Year Rep to confirm the information in your quoted document. I was surprised when it was not. With further probing I was informed that they get this question at least once a day. hmmm.
So, maybe I will call again and have then explain this particular paragraph.
""Unless trying to resolve poor ride quality problems with an RV trailer, it is recommended that trailer tires be inflated to the pressure indicated on the sidewall of the tire. Trailer tires experience significant lateral (side-to-side) loads due to vehicle sway from uneven roads or passing vehicles. Using the inflation pressure engraved on the sidewall will provide optimum load carrying capacity and minimize heat build-up.""