those are stock rims on truck? 1-how have the tires worn on truck!? (wear center only) 2- do they look like they are bulging on rims!? i have 16×6.5 rims and want to do same thing!! the tires are for a 7 inch min rim.
Kiss those tires good bye , those 6'' wheels arent wide enough and the weight of that truck are gonna eat the sides of your stear tires and the middle of the rears are going to wear out...I'm talking from my own personal expierence..