18's with 275s on a Duster

Scat said
Soo. 9” wide wheel is 4.5” with zero offset so when someone says +35 they are adding 35mm what’s roughly 1.375 so what would give a total backspace of 5.857 roughly. Not that hard to figure out.

Nope. That’s exactly what I was talking about. A 9” wide wheel has a 5” backspace with 0 offset. It’s 10” wide outside to outside.