i figured i would get more power out of my truck. when it was pushing 39's it did pretty good but now that i went to a 35 it seems to have way more power. i just put them on so we'll see in about a week if it'll perform better or not. i wanted a wider tire to make sure i wouldnt flip or anything. the thing is with my old rims the back spacing was very little so they stuck out a little more. the rims i have on now need a lil less backspacing. im gna put some wheel spacers onthe front to stick em out a little more, cuz they were rubbing a little big on my leaf spring.