The K-Line Tire Runout Gauge measures both radial and lateral tire runout conditions, helping to eliminate irregular tire wear, ride vibration and lengthen the life of tires. This gauge utilizes a roller wheel placed against the tire tread combined with a gauge bar, individual low and high spot sliders and magnified measurement readout that quickly shows the amount of runout present. The K-Line Tire Runout Gauge can pinpoint problems either directly related to the tire and rim or some other trouble areas that may be causing runout.