I currently run 275 65 20’s BFG’s AT but want to switch to TOYO AT II 305 55 20’s. My question is will my MPG’s or performance go down? The 275’s are a bit taller at 34” but not as wide as the 305’s at 12” compared to 11”. I know a wider tire will increase the overall surface mass and just don’t know if it will make the truck slower and get less mpg’s. I only get about 13 mpg’s right now and drive pretty aggressive and also enjoy the trucks get up and go. The 305’s are also a heavier tire then the 275’s. The reason I want to switch is I like the look oF the wider tire. Any practical advice would be appreciated!