On Wed, 20 Sep 2006, Doug Mitchell wrote:
> I have always been taught that the J referred
> to the shape of rim, not the width. I know that
> I have 4 1/2 J as will as 5 1/2 J for the Spit.
I think the J is actually the wheel "offset". Doug is right, there is a
diameter (e.g. 15) and there's a width 4.5, 5.5, etc. The only thing left
is the offset.
rml
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