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Old 09-15-2020, 02:41 AM   #8
Nick_R_23
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Join Date: May 2016
Location: Willow, Alaska
Posts: 839
Re: Considering running 18’s - what fits?

Main problem is that I’m away for work for a while and don’t/haven’t had access to my truck for a while. I’d rather not guess on a fitment as wheels aren’t cheap.

However, since nobody seems to know for sure, I tried to do a little more research. Let’s see if you all agree with what I came up with.

I found a 15x8 rally wheel has 4” backspacing (and also 4” frontspacing). These 9.5” wheels have 5.75” backspacing (and 3.75” frontspacing). This means the new wheel will sit inward only .25” on the outside, but 1.75” inward more on the inside. However, with a 1” wheel spacer, it would now center the backspacing like stock (with 4.75” on each side now), but the wheel would be 3/4 wider than stock on both the inside and the outside of the wheel.

So the big question would be, do I have enough room on both the inside and outside of the wheel to add an extra 3/4” width each direction over a stock 15x8?
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