Originally Posted by StevL
Yellow sticker in door jam is the tire rating, the trucks payload may be found in the owners manual or the manufactures web site. To reach this number you may need a higher load rated tire.
Actually, the tire and loading info sticker does list the payload of each and every vehicle beginning in '06 I believe it was. Will state "All passengers (occupants) and cargo should never exceed XXX(X)lbs". This is for each vehicle as it rolled of the assembly line, with the as optioned factory tires.
The owners manual or manufactures website may only give the payload amount for a base model, without any options. Add any options, and the payload goes down.