I go through a lot of tires. Heavy rider, lots of miles on really poor pavement, and when the sidewalls get cut up they get replaced. Another thing that makes my tires get less mileage is the occasional panic stop. Nothing like a tourist lurching out into the road just feet in front of you while you are coming down a 10% slope to scrub rubber off a rear tire.

Unless I really need one at the moment, I buy online. https://www.biketiresdirect.com/ Check in often for their daily deal.