The lift and spacers are causing problems you don't know of yet so if you go with a different wheel/rim, do one with the offset that will allow you to delete the spacers...say something like a 14x8 with a 5+3 offset. Then go with some nice 28s or 29s x 10s. No matter what tire you get, they will be heavier then the stocks and as such will require more power to rotate them. The reclocking and sliders will help get as much back as possible but don't expect it all. That extra weight and lift will effect the clutches & belt, CV joints and steering parts over time but...whatcha-gona-do..can't gain somewhere without taking from somewhere.