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2026-11-01 · 3 min read

Disc Brakes vs Drum Brakes — What's the Difference?

Most modern cars use disc brakes on the front and drum brakes on the rear. Here's how each system works, the maintenance differences, and when drum brakes become an issue.

Disc Brakes vs Drum Brakes — What's the Difference?

你的车前轮和后轮的刹车系统可能是不同类型的——大多数人不知道这一点,直到师傅说「你的后鼓需要调整」时才疑惑。

碟刹(Disc Brake)

由刹车盘(金属圆盘)和刹车卡钳(夹住刹车盘的夹钳)组成。

踩刹车时,卡钳夹住刹车盘产生摩擦力减速。

优点:散热好,制动力强,湿地性能好,维修检查直观。

绝大多数现代乘用车的**前轮**都是碟刹,部分中高档车四轮全碟。

鼓刹(Drum Brake)

由鼓状金属圆筒和内部的刹车蹄片组成。

踩刹车时,刹车蹄片向外扩张,顶住鼓内壁产生摩擦力。

优点:成本低,还能兼作手刹(停车刹车)使用,适合低速制动需求。

缺点:散热差,长时间制动后容易过热(制动衰退),湿地表现不如碟刹。

大多数经济型车的**后轮**是鼓刹,如 Myvi、Vios、City(旧款)等。

保养差异

碟刹:刹车片(外部可见)磨损后更换,刹车盘检查变形和厚度。

鼓刹:刹车蹄片磨损更换(需拆鼓才能检查),同时需要调整间隙——鼓刹如果间隙太大,后轮制动力会明显不足。

鼓刹调整(Drum Brake Adjustment)通常每 20,000–30,000 km 应该检查一次,很多车主会忘记。

鼓刹什么时候出问题?

后轮制动力明显不足(拉手刹效果变差):刹车蹄片磨损或间隙调整不当。

踩刹车时车子轻微向一边跑:左右后鼓刹车效果不平衡。

后鼓区域有烧焦气味:刹车蹄片过热或卡死(刹车没有完全放开)。

4M CARCARE 保养时会检查鼓刹间隙和蹄片状态,鼓刹问题常被忽视但影响实际制动效果。

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