Practice question

Why are disc brakes generally preferred over drum brakes for the front wheels of modern passenger cars?

  1. Disc brakes are simpler to manufacture and cost significantly less.
  2. Disc brakes have better heat dissipation, making them less prone to brake fade under heavy or continuous braking.
  3. Disc brakes are fully sealed from the environment, protecting them from water and dust contamination.
  4. Disc brakes have an inherent self-energizing action that reduces the hydraulic pressure required.

Answer: B — Disc brakes have better heat dissipation, making them less prone to brake fade under heavy or continuous braking.

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