You asked and answered the question. That's a good way to do it. Shocks can last 10,000 miles or they can last 150,000 miles. The single biggest factor is what kind of roads they are driven on, and how the car is driven on those roads. Slam one Manhattan pothole at 100 miles and you might need a new shock at 101 miles.
How many miles do run-flat tires last? Bridgestone run-flat tires will allow continued operation even after a loss of some or all inflation pressure for up to 50 miles (80 km) at a maximum speed up to 50 mph (80 km/h.) MTSxp7B.