Garth, to get an idea of how much difference there is between tire size, check out this link.

http://www.miata.net/garage/tirecalc.html

The factory tire size F70-14 is equal to a P215/70R14.

I checked out the difference between the factory size and the size you have now. Your not to far off the mark when it comes to tire size aspect ratio. So that has little to do with the tires rubbing. It's the shallow rim offset that is causing the problem.

There was a thread posted not to long ago. It was about someone using spacers to bump the rims out so they would clear the caliper. It was due to incorrect backspacing on the rim. Correct backspacing is often overlooked when purchasing after market wheels. But it plays a big factor in the overall fit and handling of the car.



Party on Garth! Sorry I couldn't resist No offense taken I hope.