Why is it dangerous to overload a tractor?

Overloading a tractor poses significant safety risks primarily because it can lead to instability and increase stopping distances. When a tractor carries more weight than it was designed to handle, its center of gravity can be adversely affected, making it more prone to tipping over, especially when navigating slopes or uneven terrain. This instability can be critical when making turns or during sudden stops.

Additionally, overloaded tractors require more distance to come to a halt. The added weight increases momentum, which means that the operator must account for a longer stopping distance to safely bring the tractor to a stop. This can be especially hazardous in situations where quick reactions are necessary, such as in traffic or when encountering unexpected obstacles.

In contrast, the other answers suggest misleading notions, such as improved performance or safety when done "properly," which are not true in the context of tractor operation. Overloading can never be made safe through proper methods; it fundamentally compromises the vehicle’s ability to operate safely. The reduction of tire wear suggested in one of the options is also inaccurate, as increased weight places greater stress on tires, likely leading to premature wear and failures.