Disc brakes are less efficient than drum brakes. This statement is __________.

The assertion that disc brakes are less efficient than drum brakes is false. In reality, disc brakes generally provide superior performance compared to drum brakes for several reasons.

Disc brakes have several advantages. They are better at dissipating heat, which is crucial during heavy braking scenarios since overheating can lead to brake fade. Unlike drum brakes, which can retain heat, disc brakes allow for better air circulation around the rotor, thereby maintaining consistent braking performance. Furthermore, disc brakes typically offer more reliable stopping power in various driving conditions, including wet weather, because the exposed surface of the rotor dries out quicker than a drum brake, which can trap moisture.

Additionally, disc brakes are less prone to wear and tear from corrosion because they are less enclosed than drum brakes. This also contributes to their overall efficiency and longevity. Consequently, understanding the mechanics behind the workings of these braking systems clarifies why the statement about the efficiency of disc brakes compared to drum brakes is not correct.