its proven clearly they can handle far more than a 9+30 if your not into fitment thats fine , but really the thread isnt asking for what he should get its asking how to make what he has work.
preach where relevant.
yes cos thats what i paid to have mine done, seen it done the other way and in many other ways to the mallet/heat gun you'll note i DIDNT recommend doing it yourself.
235/40 is fine on a 9" you can run much lower if you go camber arms, stretch tyres etc. billy has 9.5 +15 iirc on the front and it looks tough as. I'm going 9.5 + 12 whinge away old schoolers.