I hate to say it, but when you buy this type of tire, expect 20-28k at best if you drive it hard at all. They aren't designed for the family ride. All the years I spent in law enforcement, we would go through tires in a 12-15k range because of severe duty, now I have trucks, we get 80K on steering 120K on drives, so look at rubber compounds, design, rating of tires you buy...then add in mods, wear and tear, shocks, springs, and yes, chuck holes, and you are now looking at alignment, tire balance, air pressure (which changes daily)...tires get neglected by most of us...our preventive maintenance is pressure check every week, alignment every year along w/ tire balance...sooner if indicated by wear or driveability...