A quick look online will show those wheels new for around $600, the Yoko G96's well over $300 mounted and balanced. Throw in TPMS and hub caps and you're up over a grand each and you have 5 of them. I have no idea what you could hope to sell them for or what a dealer would allow in trade. It's a safe bet they will want to steal them. I have the same set up on my sport and after thinking things over I decided that rather than taking the loss to just run them until the tires are shot. I did get 17's and studded snows for the winter. When you go in for service remind the dealer that the owner's manual says that trucks equipped with 20" wheels should rotate all 5.