As a rule of thumb, a healthy set of car tires should last for 60,000 to 75,000 miles. However, numerous factors can extend or deteriorate their life. One of them is preventative maintenance. If you regularly get their pressure and alignment checked, then you are more likely to prevent them from getting flat. The type of tire also plays a vital role; every tire has different treadwear ratings, and thus, the life span can vary. If you are careless about the way you drive, then do not be surprised if your tires wear out before time. Therefore, be gentle with your acceleration.