They’re 16x6. A 235/85-16 31.8 or 255/85-16 32.8 will fit with zero issues. They don’t need a spacer. I run one, but not for any other reason than looks.
I run 255 km3. Be aware, most 255 available are MT or a really aggressive AT hybrid. 235 had 4x as many tire choices.
I’m on 005/005 heavy...
You should be getting better than 10. I get 13 city and 15 highway with a 340k desmogged 2F/h55f/3.70 gears and plenty of extra weight.
I’m on OME CS005 springs front and rear, OME shackles with Bilstein shocks. My tires are 255/85r16 or “33x9.5” equivalent in 16x6 70 series wheels. I’ve also...