Hey guys..quick question. i have an 06 FX4 super cab and im wondering if anyone knows the maximum tire i can fit stock without messing with the suspension. i have some Boss 20" rims x 8.5" wide and am thinking about the toyo open country M/T's....anything would be helpful.

 

adding a leveling kit, you can do a 33-34" max diameter- if you match the stock wheel backspacing, you MIGHT be able to squeak some 35's with only minor rubbing... if you stick with the stock wheels you can clear 35's w/ a leveling kit.

im running 35x12.5R18s (stock fx4 wheels) with minor rubbing on the upper and lower control arms...

 

u should be able to put 33's on the stock suspension, but u should think about leveling it. would look better.

 

2.5 leveling kit and 35's if they dont rub they aint big enough

 

I'd stick with 33x12.50's on those wheels personally.