Alright so I've done a ton a research and still can't find a solid answer. I have an 08 sierra z71 NNBS on the 4.75 RC lift. Currently I'm running nitto terra grapplers 285/70r17 with 2 inch spacers, slightest squeak at full lock in reverse. I'm wanting to switch to 285/75 r17 (33.9x11.3) Toyo open country AT'S. Can this be done/how much trimming would be required?? Also just ordered a set of procomp 17x8 rims with 0mm offset/4.5 backspacing. Any input would be great or if anyone on here is running a similar/same set up