The trailer we are looking at weighs #5595 according to Grand Design, with a hitch weight of #505. We will get a new tow vehicle to handle this weight, I am considering 1500 Eco Diesel, 1500 Hemi ...
So, once again, if the OP is talking about the NEW Ram 1500s, as in 2019 model year, which are just becoming available, their payload has been improved. And they now also sport 6 lug axles just like everybody else.
And for the uninformed there is a WORLD OF DIFFERENCE in the ride between a new 1500 and 2500.