My day job involves working out how morons get themselves and innocent others killed, so it's a bit difficult to say nothing at times like these. When a tyre manufacturer says that their 225 tyre wont fit on a 9.5 inch rim, it's not because they don't like how it looks. And that's to say nothing of the fact insurance will be void when the inevitable happens driving on a defective tyre/rim combination.
BTW you may have trouble fitting some 17's over the brakes on an MPS.