This is especially important if left turns have to be made. Collisions can occur when machinery starting a left turn is hit by a car passing from behind. Since most wagons don't have turn signals, consider using an escort vehicle to help alert other drivers. Collisions occur when machinery starting a left turn is hit by a car passing from behind. Harvester Stability Harvester stability is very dependent upon the header and grain tank.
Heavy headers can tip the combine to the front.
Keep the header as close to the ground as possible when traveling on or off the road. Raising the center of gravity makes the machine easier to tip. Avoid traveling at highway speeds with a full grain tank and reduce your travel speed for all turns, on or off the road. Don't extend the tank height beyond that recommended by the manufacturer. Extending the tank too much can make the harvester top-heavy and prone to an overturn and could possibly damage the combine's frame.