::::::Question about Car Rims and Bolt Patterns ...FWD to RWD:::::::?

I have a set of after market rims that a universal bolt pattern that were made for a FWD vehicle.... i now have a RWD vehicle which they wont fit because the bolt pattern is slightly off ...and and i was wondering is there any kind of FWD to RWD adaptor i could buy...ive never heard of one but i was wondering.