What is a major consequence of overloading a trailer?

Overloading a trailer has significant consequences, primarily regarding safety and performance. When a trailer is overloaded, it greatly increases the stress on the braking system. This added weight can lead to a higher likelihood of brake failure due to overheating and excessive wear. Furthermore, the additional weight can compromise the vehicle's handling stability, making it more challenging for the driver to control the trailer during turns, stops, and other maneuvers.

This reduced handling stability is particularly concerning in emergency situations, where quick and precise actions are necessary. Having more weight than the trailer was designed to carry can lead to swaying or fishtailing, which can further endanger both the driver and other road users.

In contrast, the other options relate to benefits that do not occur as a result of overloading. Overloading does not provide increased cargo space; in fact, it can lead to legal and structural issues. Improved braking performance is not achievable with excess weight; rather, it is compromised. Lastly, acceleration and speed are generally hindered with an overload due to the strain on the engine and transmission, which can lead to longer stopping distances and the potential for increased accidents. Overall, the primary consequence of overloading is detrimental to safety and vehicle control.