The actual life of your tires is determined by the type and condition of vehicle, the grade and type of tires, and your personal driving style. Most quality road tires mounted on a passenger car in good repair and rotated at the appropriate intervals should last 45000 to 60000 miles. People who chirp their tires, ride on gravel, and perform "panic" stops will find themselves replacing their tires more often that those drivers that accelerate with restraint, brake smoothly, and drive on smooth pavement in a car that is properly maintained.