I drive aggressively and I got 24K on my Goodyears. That included driving over 12 different High Sierra passes from a elevation of over 7,000 feet to almost 10,000 feet. My Karma is my daily driver.
You really need to follow the wear guidelines for the tires as they look like they need to be replaced long before the guidelines say they need to be. Check the wear-bars in the tread.