A tire wear state estimation system comprising: a vehicle ; a tire supporting the vehicle; a sensor unit being mounted on the tire, the sensor unit including: a footprint centerline length measurement sensor to measure a centerline length of a footprint of the tire ; a pressure sensor to measure a pressure of the tire; a temperature sensor to measure a temperature of the tire; and electronic memory capacity for storing identification information for the tire; a processor in electronic communication with the sensor unit , the processor being configured for receiving the measured centerline length, the measured pressure, the measured temperature and the identification information; a tire construction database storing tire construction data, the tire construction database being in electronic communication with the processor , wherein the identification information is correlated to the tire construction data; and an analysis module being preferably stored on the processor and configured for receiving the measured centerline length, the measured pressure, the measured temperature, the identification information, and the tire construction data as inputs, the analysis module including a prediction model to generate an estimated wear state for the tire from the inputs, characterized in that the analysis module further comprises a historical footprint measurement database storing a historical log of footprint measurements, the historical footprint measurement database being in electronic communication with the processor , and wherein the normalized footprint length is correlated to the historical log of footprint measurements, and an average of the values is taken. a vehicle ; a tire supporting the vehicle; a sensor unit being mounted on the tire, the sensor unit including: a footprint centerline length measurement sensor to measure a centerline length of a footprint of the tire ; a pressure sensor to measure a pressure of the tire; a temperature sensor to measure a temperature of the tire; and electronic memory capacity for storing identification information for the tire; a footprint centerline length measurement sensor to measure a centerline length of a footprint of the tire ; a pressure sensor to measure a pressure of the tire; a temperature sensor to measure a temperature of the tire; and electronic memory capacity for storing identification information for the tire; a processor in electronic communication with the sensor unit , the processor being configured for receiving the measured centerline length, the measured pressure, the measured temperature and the identification information; a tire construction database storing tire construction data, the tire construction database being in electronic communication with the processor , wherein the identification information is correlated to the tire construction data; and an analysis module being preferably stored on the processor and configured for receiving the measured centerline length, the measured pressure, the measured temperature, the identification information, and the tire construction data as inputs, the analysis module including a prediction model to generate an estimated wear state for the tire from the inputs, characterized in that the analysis module further comprises a historical footprint measurement database storing a historical log of footprint measurements, the historical footprint measurement database being in electronic communication with the processor , and wherein the normalized footprint length is correlated to the historical log of footprint measurements, and an average of the values is taken. <EOS>