I have a set of original equipment Pirelli P Zero Run Flat summer tires for the BMW 128i sport package cars. The sizes are 205/50R17 front and 225/45R17 rear.
The front tires have 65% tread remaining (13/64" vs. 10/32" new).
The rear tires have 95% tread remaining (19/64" vs. 10/32" new).
These tires retail for ~$800 according to Tire Rack and I'm asking $500 OBO + shipping. Local pickup is preferred.
Tire Rack Link