Yes the true split rims are my 65 C50 they are outlawed in mass. . The split rings are on my sons 48. The hub hole diameter on my rims is 71/4 inches across. The lug hole diameter is 8 3/4 inches across they are hub piloted rims. My guestions are what year did they stop using this style rim and what replaced it. I can not afford to buy new rims so what have people looked for in the junkyards. I would really like to stick with the 20 inch rims for originalitys sake. Any help in my quest would be greatly appreciated. Lou. H.