Not recommended unless you are comfortable with it, but I put a 5" wire wheel on a 4 inch Makita hand held grinder.
It's a bit like holding a pissed off Badger by the tail, but man it tears it up
My DA sander is a Makita. I love their tools. I have a wire wheel attachment I've been using for rust in the floor pans ... I'll give it a go underneath the wheel wells!
