On our recent road trip back home, I discovered a nail in the passenger rear tire (see picture below). We drove for over 600 miles without any change in tire pressure. This morning I brought the car to our local car shop that I like, hoping they can just remove the nail and patch it from the inside. They immediately told me that the nail is too close to the sidewall (1 inch is their usual cutoff) to repair. So I'm looking at having to replace this relatively new (fewer than 8,900 miles) tire. The shop called around and said their 3 tire suppliers do not carry this tire (Goodyear Eagle Touring, 245 45R19, 98W), so I drove home and looked online. Tire Rack lists this tire at $222.41, plus S&H. I asked the shop, and they said they would install it for about $30 labor. How long (how far) should these tires typically last? 40,000 to 50,000 miles? 5-7 years? I don't drive very aggressively, but I do live in Chicago where the road salt and winter cold temperature are quite damaging for any tire. Debating with myself when I should replace this tire...now vs. 1st tire rotation vs. when it's time to replace all 4... Any thoughts?