Stock tires were E rated 245/75 16 – Great ride, great handling – one of my favorite long drive vehicles ever. Second set of tires were D rated BFG AT/TA 265-70-16 – Great ride and still great handling, terrible tread life and a bit of road noise (still a good tire) but not E rated :frown: Now I have the MS2 E rated 265-75-16 (3.8% larger than stock) – one of the most recommended and highest rated tires I could buy. My problem is now (with the 5[SUP]th[/SUP] wheel trailer and 75psi in the tires) or unloaded with 60psi, 70psi or 75psi in the tires it feels like I am driving in a 50mph cross wind all the time. If I hit the brake hard (unloaded) the truck actually wiggles back and forth – as if I have a flat tire or something. Searching the truck forums I have not heard of any similar complaints. People always talk about ride stiffness due to tires and pressure and I totally follow those conversations, but not this type of issue. The truck handles so poorly that I am uncomfortable going over 65mph, where previously I could cruise at 75mph and just relax. This went from one of the nicest driving vehicles I have driven to the worst. Could I have gotten a bad tire or even a bad set? I also run airbags but have them set to about 5psi right now. Sorry if this is a dead duck topic but I could not find anything using the search engine provided by gmtruckclub in this forum.