In regards to "D" rated tires vs. "E" rated tires, I can tell you that we get this question almost daily. "My truck has death wobble, what should I do, and what is causing it". The first question I ask is what kind of tire are you running and is it "E" rated. Everyone that calls, that has no other issues with the truck (ball joints, etc. ) is running a "D" rated tire. Most of them are running BFG's.
Does that prove that E rated are better, no, but think about it. It's called gravity. How much does that CTD weigh? Get the truck moving sideways and gravity starts to act. Would you rather have stiffer sideway to help control it?
Personally, I love BFG tires. They have driven me in and out of Baja for years on many trucks with no flats. However, all of those trucks were lighter weight, gassers.
We have also run "D" rated tires on a CTD. Did they explode the second I put them on, NO. However, when we put the E rated tires on the truck, the vehicle was far more stable. It cornered better and tracked better.
Just my two cents.