I've searched and searched but couldn't find an exact answer. Currently I'm running factory 17's with 1.5" spacers. In my understanding that puts me at 4" of backspace. Can anyone confirm that? Tires are 315/70/17. Now I managed to score a set of moto metal 954's for a hundred bucks. The specs on them are 17x8 with 4.25 backspacing and -6 offset. Does anyone think these would fit the same as my current setup? Any input is appreciated! TIA!