I'm pretty certain you'll rub on the 235/40's on big bumps and things. You'll need a touch of camber to clear, like Nix pointed out I was dropped a good 2-3 inches though..
what's going on boss, I ran an 18x9+35 with 225/40 tires all around and it was pretty good for me. Just enough stretch to clear most of my rubbing issues, but still have enough rubber to drive crazy. I think that same spec should be just fine for you on d2 springs, because I ran that size on...