I have looked all over this forum for the answer to my question, to no avail, so I thought that I would just ask for some feedback.
I have an 05 King Ranch 4x4 with 2.5in leveling kit, I would like to know if I can run 33/12.50/20 or 305/55/20 Nitto trail grapplers on 20x10in MotoMetal 951's with 4.79 backspacing and -18mm offset. I know that 295/60/20 will not work, without doing a lot of trimming!

 

I don't know my back spacing or off set but I ran 325/65r18 on a 9" wide motometal with a 2.5" leveling kit for a long time until I got my 6". It did require MINOR trimming tho. I didn't have to do much.

 

Thanks for the response. The backspacing is where I have the issue. Any others? I know I can't be the only one with this problem.