The other way to do this would be a custom spacer/adaptor to covert the PCD to a 5 stud car wheel and get the correct offset you'd be looking at a 15" or 16" car wheel most likely to fit over the rear disc and caliper. You'd then have to weigh up whether the cantilever on the final drive is an issue.
This approach has been done many times on sidecar rigs. I think tripteq did an adapter for an 1150 to a smart car 3 stud 15" wheel.
This approach has been done many times on sidecar rigs. I think tripteq did an adapter for an 1150 to a smart car 3 stud 15" wheel.