Same size tires, 285/45/22. Only difference was first truck had Goodyear Fortera, new truck has Goodyear eagle touring. From what I've been told and from reading up on them, the eagle touring are a smooth riding tire. PSI was 41 when I bought it, lowered it to 36 the next morning but no difference. The following day, I took every wheel off, made sure it was centered on the hub and retorqued every lug nut and still no difference. I took it to them the next day so they could look at it and they said 2 tires were out of balance and one of the tires "wasn't put on right". I didn't even know what that meant and the guy I dealt with didn't seem like he felt like explaining so I just said thank you and left and hoped it was fixed. I drove off and within 20 seconds I could tell whatever they did, fixed nothing. I called my salesman and he made me an appointment to have one of their "suspension specialists" look at it, which is this Thursday. I hope they don't try and tell me its just the tires because it definitely doesn't feel like a wheel balancing issue. Going over any imperfection in the road feels like I'm driving an old leaf spring truck with worn shocks.