Someone could correct me if i'm wrong, but i don't believe that the boat trailer tires are rated for 75mph! I never go that fast, and try to keep it under 65 at all times. Those are small tires and will overheat easly. Also when i tow, they recommend to disengage OverDrive. On my f-150 i like to keep the rpms under 2500. Hopefully that will help my trans and the engine to last a bit longer. When i go fishing now, everyone is passing me now, but i don't care anymore. I'm not there to go racing J.