Backspacing/offset question
Hi guys,
I'm trying to figure out the correct backspacing and offset for my new set of rims. Currently the truck has 235/75/15 on a 15 x 7" rim with -6 offset and 3.75" of backspacing. What I would like to put on my truck is 275/40/20 on all four corners. Given the offset/backspacing that I currently have, what offset/ backspacing would I need to fit a 20x10 or 20x8.5 with a 275/40/20?
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