So, I am in the exact same spot. I've been doing research for hours now, reading and re-reading this thread, checking out some of the setups in the rims-n-rubber thread.
Unfortunately, especially in the wheels / tires combination thread, it seems like there is some conflicting information about what diameter will required a shave on the cladding.
This might be a basic misunderstanding on my part, but I am primarily looking at the diameter as the bottleneck for what combination you can have. By plugging some numbers into the Tire Size Calculator, I found:
285/55-18 -- 30.3 inch diameter
275/65-18 -- 32.1 inch diameter
265/65-18 -- 31.6 inch diameter
By making a few notes from the other thread, it seems that around 32 inches in diameter is where you start to need to make adjustments to the cladding.
I believe someone earlier in this thread indicated that 275/65-18 should work, and I just wanted to double check. I am really hoping that the BFGoodrich All-Terrain T/A KO 265/65-18 will be a good fit (I currently have 18 inch American Racing wheels from the prior owner).
Any additional insight is much appreciated!