A method of modeling a tire includes providing a tire having a first tire design, rotating the tire under a vertical load, and measuring a plurality of forces at a plurality of selected conditions. The method further includes using a computer to plot the plurality of forces against the plurality of conditions, using the computer to plot a plurality of moments against the plurality of conditions, and using the computer to fit a first force curve to the plurality of plotted forces at the plurality of conditions, such that the first force curve is asymmetric. The method also includes using the computer to fit a first moment curve to the plurality of plotted moments at the plurality of conditions, evaluating the first force curve and the first moment curve, and making a second tire design based on the evaluation of the first force curve and the first moment curve.

A vehicle service system configured to acquire images of a three-dimensional region of a vehicle wheel assembly tire tread surface. The vehicle service system is configured to process the acquired images to produce a collection of data points corresponding to the spatial position of surface points in the region from which tire tread wear characteristics are identified. The acquired images are further utilized to provide both a graphical and a numerical display to an operator, with the numerical display linked to specifically annotated or indexed points or windows within the graphical display, thereby enabling an operator to quickly identify specific focus points or regions on the tire surface which have been measured at the numerically identified tread depths.

A tire deterioration state prediction method for predicting, by a computer, the deterioration state of a tire using a tire model configured from multiple elements comprises an information acquisition step for acquiring information relating to a use environment, which includes the pressure history and the temperature history in an air chamber during tire use, and the history of load acting on the tire, and information relating to the tire characteristics, including the material characteristics of members configuring the tire; a temperature history calculation step for calculating, for each element, the temperature history of the tire on the basis of the information acquired in the information acquisition step; an oxygen concentration history calculation step for calculating, for each element, the oxygen concentration history on the basis of the information and the temperature history of each element; and a tire deterioration state evaluation step for evaluating the deterioration state of the tire on the basis of the oxygen concentration history of each element.

A processing device divides an initial tread pattern into multiple mutually adjacent partial patterns, each having a width smaller than that of the initial tread pattern, by at least one straight line along a circumferential direction of a tire. The processing device calculates variation amounts of characteristic values of the partial patterns with respect to the circumferential direction, based on a contact region, each of the characteristic values indicating a shape of a corresponding partial pattern. The processing device modifies the shapes of the partial patterns so as to reduce the variation amounts of the characteristic values of the partial patterns. The processing device relatively moves the partial patterns along the circumferential direction so as to reduce a total variation amount of characteristic values of at least two mutually adjacent partial patterns. The processing device combines the partial patterns with each other to generate a tread pattern of the tire.

The rolling parameters of a tire on a rolling surface are evaluated, and more specifically a tire's adhesion potential on a rolling surface is estimated. A method and a system enabling such estimation are disclosed.

A method for controlling motion of a heavy-duty vehicle includes obtaining input data related to one or more tire parameters of a tire on the heavy-duty vehicle, estimating at least part of the one or more tire parameters based on the input data, configuring a tire model, wherein the tire model defines a relationship between tire wheel rolling resistance and vehicle motion state, wherein the tire model is parameterized by the one or more tire parameters, estimating vehicle motion state, and controlling motion of the heavy-duty vehicle based on the tire model and on the vehicle motion state.

A method for controlling motion of a heavy-duty vehicle, the method including: obtaining input data related to one or more parameters of a tire on the heavy-duty vehicle, determining at least part of the one or more tire parameters based on the input data, configuring a tire model, wherein the tire model defines a relationship between wheel slip and generated wheel force, wherein the tire model is parameterized by the one or more tire parameters, and controlling the motion of the heavy-duty vehicle based on the relationship between wheel slip and generated wheel force.

The Lummi Rex, is an advanced car tire that displays contrasting colors within the tire by the aid of the shining chromes found on the rims and it is to yield caution to other drivers and pedestrians. The sole purpose of the Lummi Rex is to reduce and eliminate road accidents due to poor driving, drunk driving, irresponsible drivers, reckless drivers, car malfunctions, broken taillights, and miscommunication between drivers, pedestrians, and everything in its surroundings. The mission of the Lummi Rex is, but not limited to ease the communication process between drivers and pedestrians in a novel manner. Pedestrians will know that when this advanced car tire is illuminating in color Blue it means the car ignition is on, color Red means the car is in motion and finally, when the entire tire is glowing in color Green simply means that the brakes have been applied.

A tire-mounted sensor includes a vibration detector, an acceleration sensor, a signal processor, and a transmitter. The vibration detector outputs a detection signal according to amplitude of a vibration of the tire. The acceleration outputs a detection signal according to an acceleration of the tire in a radial direction. The signal processor detects a rotational angle of the tire reaching a ground angle during each rotation of the tire, sets a measurement period including a time period during which the rotational angle of the tire is at the ground angle, extracts a ground contact section during which the portion of the tread provided with the vibration sensor is in contact with the ground, in the measurement period, and generates a road surface data based on the detection signal output from the vibration detector during the ground contact section. The transmitter transmits the road surface data.

A hand-held device for obtaining a three-dimensional topological surface profile of a tyre, the device comprising: a base comprising an aperture; a light source arranged in use to generate an elongate pattern of light, and to project said pattern through the aperture onto a rolling surface of the tyre; a detector arranged to image a region of the rolling surface of the tyre; a plurality of pairs of guide wheels mounted on respective axles mounted on the base, wherein the guide wheels on adjacent axles are linked by gears; and a rotary encoder arranged to generate a signal corresponding to rotation of an axle.