All four look like they are 17x9's. The front tires are 275-35-17, and the rears are possibly Nitto 315-35-17. I can tell because of how much the rear tires "bulge" out past the rim. That is the same set up I had before I got different rims. Also, that picture is stretched sideways quite a bit, so the tires look wider than they are.....:thumbsup: It is possible that the rear rims are 17x10.5, and the tires are BFG 315's. After a closer look at the tread pattern on the rears, they do look like BFG's and not Nitto's. The BFG 315's stick out a bit on a 10.5 rim, and will not fit properly on a 9 inch rrim.
That's a tough one :dw: The rear tires look huge in that picture. I'm thinking maybe the rear has 18" wheels with 345/30-18s and the fronts are 17" with 275/40-17 :shrug:
I've seen it done before. Do a search, I remember seeing a lengthy thread on that exact fitment. I think the guy who did it had the wheels widened. Nitto recommends a rim width range of 11.5" to 12.5", 12" being ideal.