What backspacing do you guys run on your sprungover sammi's with stock axles? Up there I had standard 3.75 backspacing 15x8's with 32x11.50's, and they never rubbed on the springs. Down here in Florida, there is this craze about everybody getting 2.5" backspacing to keep the tires off of the springs. Any help? I am going to be running 31x10.50 mtr's.