OK George. Let‘s take this further. I will ask Andrea manufacturing details( only one version or able to manufacture with individual offsets and widths), and minimum order details. I think we all agree that the rear wheels should have the ribs (short or long?) and the wheels should have the center section proportionally larger, rather than adding “steps“ in order to achieve the desired size. I know you like staggering the wheel sizes, however I doubt manufacturing 2 different sizes is feasible. I will check this point too. I will will drum up interest on this side of the pond as soon as I have sufficient information. Maybe I can burden you with drumming up interest on your side of the pond? Mike Drew knows that I am looking into this matter. I‘m sure he would help us to spread the word. I will contact Andrea as soon as I have your comments. Thanks.