17x8 245/45/17 on all four with 4.5bs?

Yeah, he has over 5" of back space with that setup. I keep seeing different numbers from .171" to 0.85 width change each side when converting to large bolt pattern. I probably should just order the the back and try to see if they work on the front before ordering the full set to see if the 4.5 bs works with 17x8s.