METHOD FOR DETERMINING THE TREAD DEPTH OF A VEHICLE PNEUMATIC TIRE

摘要

A method for determining the profile depth of a tread of a pneumatic vehicle tire wherein the tread has a wear indicator. The wear indicator has an incision extending in the radial direction of the tire. The incision has a length visible on the tread and the length becomes shorter as wear increases. The wear indicator has two reference marks at a distance from each other. The distance is configured to remain constant and visible throughout the tread wear. A photo of the incision and the reference marks is generated via an application program of a mobile phone having a camera and an image screen. A current profile depth is calculated from the distance of the reference marks and the length of the incision via the application program. The current profile depth and/or a remaining profile depth are displayed until a minimal profile depth is reached on the screen.

主权项

1. A method for determining the profile depth of a tread of a pneumatic vehicle tire, wherein the tread has a wear indicator provided therein and defines a tread outer side; the pneumatic vehicle tire defining a radial direction, the wear indicator having at least one incision extending in the radial direction; the incision having a length visible on the tread outer side and the length being configured to become shorter in a defined manner as wear increases; the wear indicator further having at least two reference marks being at a mutual distance from each other; said mutual distance configured to remain constant and visible throughout the wear of the tread; the method comprising the steps of:
generating a photo of the incision and the reference marks via an application program of a mobile phone having a camera and an image screen; calculating a current profile depth from the defined distance of the reference marks and the length of the incision via the application program; and, displaying at least one of the current profile depth and a remaining profile depth until a minimal profile depth is reached on the image screen.