Originally Posted by
kudude
it is a vague question. I usually end up with so many cuts in the tread by the time I change then that the sidewall isn't an issue.
Front lasts longer than the back. Some tires are obviously more durable, but 1500 on the back and 2500 on the front is a "ballpark figure" that you can vary by 90% in either direction.
Tire brand does matter too - when I used Michelin Krylion Carbons, I'd get 4,000 out of the front tire easily, but might get 2,000 out of the back. With Conti GP4000's, I'm down to 2,000 up front, and feel lucky to get 1,000 miles out of the back. However, the Contis feel so much better that I'm willing to put up with it.
JB