Tire size Question ? on 6" Lift Kit

[Rhyno]

I have 39.5" tires on my Rancho lift and have room for 42's!

The 39.5's do not rub at all.

[DRZDuke]

Here's 40's on a FabTech 6 Lift, I had to move the Nerf bars back a bit because they rubbed but other than that I get no rubbing.
I doubt anything bigger than 40" will fit under a 6" lift without further mods though, otherwise, I woulda done it