I'm not too worried about life. With 225s and 245s on a 2700lb car, they aren't doing that much work. Plus, at ~3000 miles per year if I get 18,000 miles out of them I will be approaching the time I need to change them from age anyway. To some degree, I hope they have shit life... it would be nice to change a tire from wear rather than age. The Nokian NRZs on the XR have probably 1/3rd of their tread left but they're 10 years old and visibly not safe to drive on anymore. Maybe I'll be able to wear out the Sumitomos like a normal person.