NOVELTY - The wear notification system (10) has a controller housed in vehicle compartment and positioned on dashboard so that driver can visually monitor the controller. The controller comprises tread depth determining unit which determines remaining tread depth on vehicle tire (12) based on first color of annular member and time period. The tread depth determining unit coupled to vehicle battery and ignition controller interrupts power between vehicle battery and ignition controller when color properties of an annular member (30) exceeds a threshold color level or a threshold color transgression time.    USE - Wear notification system for warning vehicle driver of low thread depth on vehicle tires.    ADVANTAGE - Provides a system that is convenient and easy to use, and lightweight yet durable in design, and provides an easy and effective way of notifying a driver that a tire is excessively worn and shall be replaced. System is enclosed in a sturdy casing that is effectively embedded in the tire tread, and system conveniently shows a yellow strip on the worn tire, effectively indicating that a new tire is needed. System includes an effective visual alert system conveniently mounted on the dashboard of the vehicle, thus, providing a lighted indicator of tire tread status that is visible while driving the car. Significantly and effectively decreases the risk of injuries or fatalities that result from motorists driving on worn or bald tires, thus, helping to keep roadways safe while driving.    DETAILED DESCRIPTION - The annular member is embedded under the outer surface (11) of the vehicle tire and disposed under the tread layer (13) of vehicle tire such that the annular member is prohibited from being exposed to ambient light when tread layer has predetermined minimum thickness. The annular member has photochromatic properties such that the annular member changes color when exposed to ambient light. A color determining unit (32) which determines the color of the annular member is in visual communication with the annular member. A time period determining unit determines time period when annular member transgresses from first color to second color.    DESCRIPTION OF DRAWING(S) - The drawing shows the side view of a vehicle tire having wear notification system.    Wear notification system (10)    Outer surface (11)    Vehicle tire (12)    Tread layer (13)    Annular member (30)    Color determining unit (32)