What are the differences between disc brakes and drum brakes?
Automotive braking systems have greatly improved over the years.
Today’s vehicles mainly use two types of brakes: disc brakes and drum brakes. Both are safe and effective, but do you know what sets them apart?
Test your knowledge by answering these three questions.
- How does a drum brake interact with the wheel when it’s engaged?
a) As the name suggests, the drum makes a series of rhythmic contacts with the wheel to slow it down
b) The brake pads squeeze the rotating wheel, causing it to decelerate
c) A cylinder pushes brake shoes (segments) outward against the inside of the drum to create friction - Which type of brakes generates the most heat?
a) Disc brakes
b) Drum brakes
c) There’s no real difference - Why do manufacturers now use disc brakes more often?
a) They cost less than drum brakes and require less maintenance
b) Disc brakes greatly improve a vehicle’s energy efficiency
c) Drum brakes significantly increase the risk of wheel lockup
Answers
- c) Unlike disc brakes, which “pinch” part of the wheel as it turns, drum brakes use a mechanism that expands outward and presses against the inside of a bell-shaped drum to create friction.
- b) Drum brakes generate more heat because their components are enclosed. Heat cannot dissipate as effectively as with discs, which remain exposed to the air.
- c) Although drum brakes offer some advantages, their design increases the risk of wheel lockup, which can lead to a loss of vehicle control.
No matter which type of brakes your vehicle uses, regular maintenance is essential for your safety.
Don’t hesitate to make an appointment at an M 360 Mechanic near you.