If the rig has 7,000 lb rated axles, then two axles will support 14,000. This means the remaining 2,500 lbs is on the pin or the landing gear if the rig is loaded correctly. Hopefully one has a suitable TV with plenty of margin for its GVWR, CGVWR and RAWR.
I don't pay much attention to the alphabetic load rating, for example, in this case, "E". I rely on the sidewall rating numbers and in this case the rig's wheels better support over 3,500 lbs each and with the proper wheels to support the necessary inflation to achieve that. And for the TV don't expect a 3/4 or 1 ton SRW of any brand to properly support that Montana.
I know with my SRW Ford, I am out of the new Montana market and I have no plans for a new TV. I do like that the new TVs are gaining capability to be able to tow these behemoths. Then there's the driver's license changes I'm trying to avoid going over 15,000 lb gross trailer weight ratings. At least, this is true in California. With my current license, I needed an "endorsement" for my current towable and I don't want more than that.
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