Hi Lionel and David,
The Gamma Goat sure looks to be an interesting vehicle but I wonder if beacuse of its articulated design if it's a mechanically complicated machine?.
I don't know of anyone who has a Wiles cooker so as to examine the rims. The originals were what you could term a 1 1/2 split. One rim (the inner) is complete and has the stud holes where as the other only has the holes for the outer studs and has no rim center. The bolt pattern is six stud and very similar to the GM vehicles but not the same unfortunately. As you can see in the picture mine are pretty well rotted out!
Regards,
Brett Nicholls.