Don't those usually get printed in the Jan issue. So year ago for 2021 vehicles. Not that I would trust from past experience there numbers. I've seen them wrong more than correct.
It is a good rule of thumb, but the numbers are for a stripped model, with some fully loaded optioned rigs you can loose upwards of 2000-3000 lbs depending upon how the added option wieght effects available payload, what's need for a give hitch wieght etc.
Marty
92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
2014 Chevy 1500 Dual cab 4x4
92 Red-e-haul 12K equipment trailer