Well ive been thinking of doing this for a while to some friends, and have a set of steelies for almost every set of lug patterns guys i know have.

At random times, just take one wheel off a guys car you know, put a steelie on
continue for like a month until it is done, and then post the wheels for sale on a forum that both of you go to. At that point he would realize, it was you and yeah..

It sounds relaly fucking stupid while im sitting here typing it, but it was funny as shit while we were talking about it at work