Post your wheel and tire combos.
I do not know the back spacing I will pull the wheels off today and check. They did rub the front of the fender and had to trim a bit. After I changed to the Alterkation. I had to add a 5/16 spacer to the rear wheels to move them out. They sat too deep and looked funny after ha being 255/50/17 on before but I could not find a tire 275/50/17 that I liked will never buy the Riken Raptors again. They have no traction on wet roads.