I actually think it rides a little smoother and quieter than the stock tires. Acceleration isn't bad at all.. Im used to driving my old FJ Cruiser which had 34's, bumpers, sliders, and a bunch of other stuff with a V6 so to me the Silverado still accelerates nicely. As for MPG i havent been driving enough to really notice a change, im sure it will go down a little but not much.