I have a f150 lariat with 18 inch rims. Has 2.5 rough county leveling kit That I will be puttin on front. I'm planning on ordering 33x12.50x18 toyo open country r/t to put on it. Will they fit with no trimming? Or should I get 33x11x18? And how far will the 12.50 stick out from fender y'all think? I don't want them sticking out a whole lot. Advice needed. Here is a pic of my truck stock how it sits now.

 

You'll be fine with the 12.50s

 

good to go on the 33x12.50's. perfect size for stock wheels..

 

My truck has the 2.5 inch leveling kit. And I just put on Toyo Open Country AT II tires on it. I put on P285/70/17. The stock size is P255/70/17. I like the look. Filled up the fender wells nice. Just what I was looking for.
I have attached a few pics.