I have a Moto-Lita wheel on my 1985 MKIV. It's not here at the house, but if I get a chance tomorrow, I'll measure the diameter and let you know. I do know it is the model that has the rivets through the wood rim. I do not know, however, what hub you will need to purchase to mount the wheel on your column. I heard or read somewhere that the steering columns in our cars were from Rovers. I'll look at the hub on my car and see if I can find any serial numbers.