Tone,

I need more clarification here. I don't see how the 10" width of the wheel makes any difference? The offset of the centerline of the wheel determines the position of the tire relative to the fenders, and the width of the tire determines how far the tire protrudes from its centerline. What does the width of the wheel have to do with anything?

Let me give you an example:
  • A 10" wheel with a 0 offset and a 285 (11.5") tire has a tire protrusion of 6.25" from mounting face, right?
  • An 8" wheel with a 0 offset and a 285 tire has the same tire protrusion of 6.25", too (I think) right?


The only difference I see is that the 10" wheel will offer a more vertical sidewall profile, whereas the 8" wheel will have a more tapered sidewall, because it is significantly thinner than the tire in width.

Is there something I'm missing?

Please help, thanks.