Rocky,
my rear rims are 16" tubeless type with of width of 7 or 8". Now on the front, I have adapters on at the present (I am still in the project stage). For the front, there are OEM style trailer rims made by Hayes, which are 7" wide and fit correctly. Now to some, because they are trailer rims, they are not acceptable. Apparently there were some vans/trucks in the 70s that used a rim that would work. I don't have the details on that.
