I use tires with aramid layers that don't get flat prone when the rubber disappears
~5000 miles on rear Gatorskins and GP4000S tires (at 4500 miles my first one has just reach the bottom of its wear indicators) that spent about as long on the front tire first, although one of the Gatorskins ate a piece of tire wire I was never able to find so I abandoned it early.

2500-3000 on GP4Seasons. Those were very disappointing - slower than the GP4000S, not appreciably better riding than the Gatorskins, and they wore out in half the time.

700x25. Never weighed less than 185 on the Gatorskins or GP4Seasons. Shrunk from 200 to 146-148 on the GP4000S which could account for some of the better mileage. 90-95psi front at the beginning of the week, 100-105 psi rear. 10 pounds less by Friday.