Patent ID: 9669664
Date: 2017-06-06
CPC Classifications: B60C,G07C

Claim:
1. A method for determining a tread depth of a tread of a tire during operation of a vehicle having the tire, the method comprising the following steps: determining an instantaneous rotational speed of a wheel of the vehicle having the tire, based on data determined by at least one first sensor; determining an instantaneous speed of the vehicle based on data determined by at least one second sensor, being different from the at least one first sensor; determining an instantaneous dynamic radius of the wheel having the tire, based on the determined instantaneous rotational speed of the wheel and the determined instantaneous speed of the vehicle; determining at least one first parameter of the tire selected from the group consisting of an instantaneous tire temperature, an instantaneous tire pressure and an instantaneous tire load; determining an instantaneous dynamic internal radius of the wheel based on the at least one determined first parameter, the internal radius of the wheel being a distance between a wheel center and a tire-side start of the tread; and determining the tread depth of the tread of the tire based on the determined instantaneous dynamic radius and the determined instantaneous dynamic internal radius.