I am thinking again and what a dangerous thing this is. Compareing the obs wheels -6.5 - circle and the sd wheels 170.0 mm circle. 6.5 inch = 165.1 mm. 170. mm = 6.6929133858 inch.. If I do the math I think this means the 170 is .0254 or 30 thousanths larger than 6.5. Am I thinking correctly that If using a milling maching, I can move the center of the lug hole .015 to the outside and not increase the diameter of stud (just remove material in the one direction). H as anyone considered this? Is it possible and will it work. I guess I need some other opinions on this. ???????????? Can this produce a universal wheel that will work on both patterns. I wonder if this will solve a lio of problems for a lot of people?