I replaced my GY with Toyo's several years ago and have been very happy. The Toyo's came with e-balance, a liquid that keeps them balanced at any speed. The ride is awesome. My research in the difference between truck tires and rv tires indicated there were many different truck type tires depending on how they were going to be used. City tires maybe harder to handle bumping curbs while over the road would be a softer tire but give a smother ride. It was mind blowing to see all the variations. The big difference I found is RV tires have something in them to help resist dry rotting. They could sit longer without experiencing this condition.
Driving a tire gets it hot and does something to help resist this dry rot issue. So I make sure I drive mine every few weeks and keep them covered. Hope it works will let you know in about 5+ years.