Your comparing apples/oranges. A 65psi D-rated is not in the same category as a 65psi E-rated tire. OP is asking about E-rated.
I understand what he is asking for....regardless the results will be the same.
Some D rated tires have more capacity than some E rated tires.
As I mentioned check out the TC forum as they get a new guy on occasion who asking about using any higher capacity D tire at 65 psi vs 80 psi tire.
Now if he's not trying to carry heavy loads with no heavy trailer pushing him around then a 65 psi tire (65 psi or 80 psi) may work for him if his truck has the correct rim width.
