I second these tires. Have them on my toy hauler. Going from 10ply to 14ply made a huge difference in sway. They run very cool. My camper fully loaded is about 12k and I pull around 70 no issues. Sometimes faster to pass.Sounds like me should get the Sailun all steel ply S637 LRG tires. https://simpletire.com/paid?brand=s...tm_medium=cpc&utm_source=google&utm_term=&v=1