well I know a guy around here with 49's and he's pretty much unstoppable. You guys might know the rig. He was in the 2000 TTC. Its a massive F100 that was on 44's in the comp but now he's got it linked in the back and it has 49's.
There was a guy that has a SN-Fab buggy like mine that was running 49's and even though technically I could fit them I don't think its necessary for me. They built my chassis to fit tires that big at full stuff and full lock but really my rig weighs under 3000lb loaded. I think a 42 would work just fine. I would like it better though if they offered a 44 in a IROK. IMO the IROK really is the only BIAS that makes sense. TSL are just to stiff. I already sold a set of 38's that I hated.
