Like stated before, it all depends on how hard you drive. In some cases it's hard not to push your XFire a little, but jack-rabbit starts, panic stops, and high speed turning movements will wear the tires out sooner. Maintaining proper pressure and reasonable driving habits would lead to tread wear longevity.

There's numerous low mileage XFires out there for sale. I found mine with 6000 miles on it and the tires look brand new. I would suspect if you purchase a car with over 20,000 miles on but under 30,000 miles, you may have the original rubber on the car and new tires may be in your future real soon. I would set my priorities on the condition of the used XFire and worry about the tires later. Look for something with under 10,000 miles and you will be riding on that rubber for a long time.

Bob M