Among domestic motorists, the opinion has taken root that disc brakes are much better than drum brakes. Some even claim that the "discs" are superior to their opponents in literally every direction. This statement is fundamentally untrue. In reality, drum systems are not only not inferior, but in some ways even superior to disc systems.
The first and very important advantage of drum brakes is a high level of protection against various external influences. They do not wear out as quickly, and they also respond better to interaction with water. Including ice. In addition, drum brakes are almost not afraid of small stones flying in all directions from the road. Disc brake pads are replaced on average more often than drum brakes are repaired, which means direct savings in maintenance.
Interesting fact: most disc brakes cannot withstand more than 30 thousand km without maintenance, while drum brakes serve 50-70 thousand kilometers without replacement.
Perhaps the most impressive benefit of the "classic" braking systems is that they deliver truly powerful stopping power. This is due to the presence of a closed structure and a very large area of friction of the pads on the surface of the drum. Hence the direct relationship between the specifics of the design and the braking efficiency, including in difficult or extreme conditions.
It is important to understand, however, that drum brakes also have their critical drawbacks. One of these, of course, is the constant need to clean this mechanism. As is known, numerous wear products accumulate in the moving elements, which very quickly reduce the efficiency of the brake mechanism. Despite this, it is drum brakes that are still the input on many budget car models.
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If you want to know even more interesting things, then you should read about what is frame-shadow: whether it hides the number, and whether it can be used.
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Source: https://novate.ru/blogs/020321/58040/
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