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In my case it is non pro rated, 100% full replacement at no additional cost. Good for road hazards and defects. Good until 2/32's are left. Dont need to send the old tire back. My cost was $58 extra for the complete set of 4 tires.
For what it's worth, I have the Pilot Sport ZP's on my 2001 coup. The tires are quite a bit quieter but the contact patch is also considerably narrower. I was surprised the first time I drove the car in the garage after washing it. The wet tread track is much narrower then the stock run flats.
Try the Michelin AS. I have the non runflats (pick up aflat repair/inflator kit from the Tire Rack and call it good).......they are QUIET, have a pretty aggressive tread pattern and for 99% of the driving you will be doing, the grip is great. They also have curb protector ribs for your wheels....and that is one of the things that was pretty important to me.