Truck looks great! What size and offset are they?

 

2" Rancho Level Struts. 18X9 0 Offset. 305/65/18 BFG KO2. No rub, cut nothin'.... Mild difference in handling, lil rougher over potholes and such. But dam they look good!

 

I'm finally about to purchase new wheels and tires (seven months later lol). I've narrowed it down to the Pro Comp 50 50 series wheels 20X9 in either -12mm or +18mm offset. Those are my only options for offset. And i am going to go with the BFG KM2 tires in 305/55R20. I'm also going with the ready lift 2.25" leveling kit. My question is will I be able to fit both wheel & tire packages (either -12 or +18) without any rubbing or trimming of any kind? Thanks in advance.