You are right, MDX with the tire size of 215-40-17 being the closest to the stock 16's (603.8mm vs stock 601.4mm). Where did you get the 48 offset number from? Demo, your suggestion for tire size is way off.
I'm not too concerned about tires, it's the wheels that I am looking at right now. I forgot to ask what is the stock wheel width and what widths would safely work with my Protege, and again, what offsets would be acceptable.
Thanks.