They'll fit. center bore is larger on the front wheels, as opposed to the rear. This keeps the wider rear wheel from being installed on the front of your car. I've run 4x OEM front wheel plenty of times on my S. you wont have any issues of them contacting any part of the body.

Consequence? probably less available grip...

 

I wouldn't run it.
Your car will handle like baby diapers due to the decreased rear tire contact patch, not too mention how distasteful it will look with the wheels recessed in your fender panel

 

Not ideal, but you could run them without major issues, IMO. Lots of tire size options, you might consider running 205/50-17 fronts with 225/45-17 rears to get some tire stagger, although rears would be slightly pinched... Or you could run 215/45-17 and 225/45-17. Or 215s all around. Or 225s all around.

Lookswise, the rear outer wheel lip of the 17x7 +55 will be 9mm more sunken-in than that of the original 17x8.5 +65 rear wheel. Could run spacers, but that would be $$$ and effort that could be expended toward getting some actual 8.5" rear AP2 V3s...

 

 

Yeah it is fine. Another reason the fronts can be put on the rear is in case you have to use the spare you are never supposed to put the spare on the rear. It'll kill your diff. So you are supposed to put a front wheel on the rear and the spare in the front. As others mentioned not ideal due to being really narrow just drive carefully and try to get rears sooner rather than later.

 

Use them for winter with winter tires