Hy Cu29head, welcome, could you tell us more about your truck, engine, transmission, rear axle and rear axle ratio if you know it? I think I have some bad news for you, looking at your picture I think your rear wheel that is being shown is the dreaded and extremely dangerous (and outlawed) Firestone RH5, please check and see if all your wheels are the same design. Please take and show a bunch more pictures of everything. How fast would you like to travel while towing your trailer?