How long should tires last?

All tires have a stated lifespan. This is an estimate based on normal driving conditions and correct tire pressure. As they say "You're specific mileage will vary"

Most inexpensive tires should last 35,000 to 40,000 miles.
Most performance tires should last 20,000 to 40,000 miles
Some tires can last up to 70,000 miles or more.