Yes checked tire pressure, trailer is loaded as it has been in the past with no problems before. The Michelin's are LTX M/S. I mistyped earlier they are not 12 ply tires (that is what my TT tires are) The truck tires are 7 ply. Is that typical for truck tires hauling this weight. I have driven just about 3k miles since the tires were replaced. I have the Blue Ox Say pro and this past week while at the CG, I moved the hitch up one setting. This raised the hitch height a little bit. May have helped a little. Perhaps I will raise it one more setting. I'm just at a loss, wondering if something is broken on the truck suspension wise? Oh and the wheels are OEM and the truck came with 245's these are 265's. Thanks for all of your help guys this site is awesome.
