SYSTEM AND METHOD FOR AUTOMATIC DETECTION OF DUAL WHEELS

Methods and systems for automatically detecting whether an outer wheel of a dual wheel axel is present using a distance sensor (22) are disclosed. A distance sensor (22) is mounted so as to detect a distance between the sensor and an outer wheel (12a) of a dual wheel axle. A controller (26) compares the distance information with an expected range of distances if the outer wheel is present and determines that the wheel is not present if the measured distance falls outside the expected range. The methods and systems are particularly suitable for mobile machines, such as a combine harvester, having a rollover risk reduction/stability control system reliant on accurate width data for the machine which can be configured to apply different limits for maximum steering angle and/or maximum speed depending on whether the outer wheel (12a) is found to be present or not.