Manufacturs GCWR have NO basis in what you can tow etc. You are legal to the axel wt limits. Generally speaking, assuming you have a paid for plate that includes a max tare amount, you will get to 20K per axel, 34K per tandem, and no less than 500 lbs per inch width of tire. THat is how states are supposed to max weight vehicles per the engineer road bed limit of roads, bridges etc.
As noted, if you go over engineers limits, you will have lower handling, performance etc.
BUT, pulling a trailer OVER manufactures limits is legal. Happens all the time, with very few issues. BUT, you warranty from the manufacture may be null and void if you are really over the limits and it can be shown that this caused the part to break. You are not on the hook to pay for repairs.
Simple answer, reasonably simple answer, but not.
marty
