I just put 85s on and did an alignment to get 5.2 castor. Doesn't hit the chopped mounts but does rub a little on the front fender plastic. I expect to resolve that though.

 

Consider these options

 

It's funny this post is active right now, as I was just in a 4x4 shop. I was talking over a build between your two sizes (255/80r17), on (to be new) 17" wheels with a -12mm offset. The tech was pretty insistent that this combination of events would rub sometimes even with a BMC. I find this a bit confusing, TBH. I should mention that this is one of the more active 4x4 shops in my area (Trick Trucks out of Chantilly, VA). He also wasn't too enthused with the 255/80 on a 9.5" wide wheel, and said due to the width of the wheel the tire would bulge funny.

I came in here to discuss this and get some feedback because I'm kinda a dummy on this stuff. In fairness a good number of the FJ Cruiser on 255/80 pictures on the net do have the stock wheels without an offset.

 

Tire shops are funny at times....I paid and had them install TOYO MT 35x13.50R15 on a 15x8 rim for my lifted YJ... it fit and looked great. I didn't ever need to airdown.

 

When I bought my 13 Fj it has a 1.5 body lift and a 1.5 spring lift as far as I can tell that I run Bfg's 12.5x35x 18" Tires and wheels on it with slight rub at full lock and just live with it as I know what to expect from the front axle. There maybe spacers on the rim's also. It works fine for me.

 

I was trying to figure out the allure of pizza cutter tires and ran across this video.

 

I have had 285's on a previous FJ and tried the 255/75"s on my current and I get better fuel mileage and a smoother ride so I achieved my goal haha

 

Yeah, that one is pretty compelling.

 

Yeah, that one is pretty compelling.

After the BMC (body mount chop) I am running 285 75R 17 on my 2010 Army Green FJ. No issues except a very slight rub (and I mean "SLIGHT"). When I need new rubber I will put the same size tire on again.