I think can build up spoke wheels from parts, at least I saw an illustrated parts catalog with an exploded view, now whether you can still get parts is another story. But I don't think you can purchase them assembled. The R65LS wheels I think will work, but you need different brake shoes for the back, I think the drum is a larger diameter. The other bikes that BMW produced during this time were 19 inch wheels, so we're pretty much stuck with the 18 inch stock wheels. I just checked Chicago BMW, and they show a price of $512 for the spoke type front wheel assembly without rotors and $629 for the spoke rear wheel assembly. I'm not sure if they come with wheel bearings installed.
