I want to go to the 35" bfg km2. I am looking for a wheel to fit. BFG calls for a rim width of at least 8.5" for a 17" wheel or 8" for 16" wheels. I'm trying to locate the correct backspacing to run a 35x12.5 tire. I found the ALLPRO thread with their 3.75", will 4" work? If you are running on 35s what backspace do you have? Looks like some of you are using spacers. Whats the wheel backspacing and spacer thickness used? I would like to make the right choice and I'm sure with all the experience on the forum I can.