a 305/70/17 is pretty much a 35, at least a 35 equivalent.
plenty of threads on making a 35 fit. What lift are you running? Get ready to do some trimming, chopping, cutting and beating. They can work, but you'll need to trim bumpers, body mount, pinch weld, etc.
I am on a 3" lift with a 1" bodylift with lots of trimming and still have a bit of rubbing on the firewall with a 315/70/17. Can be done, and if you don't wheel hard it may work with less trimming. Wheel backspacing will play a big roll to gain some clearance. I have a lengthy build thread with the tire fitment/progress.