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2026-10-26 · 4 min read

New Brake Pads Squeaking — Is It Normal?

Some squeaking after new brake pads is normal and clears within a few days. But not all brake noise after replacement is harmless — here's how to tell the difference.

New Brake Pads Squeaking — Is It Normal?

换完刹车片开出去,发现还是有叫声——很多人第一反应是师傅装错了或买到劣质货。但其实大部分情况下,这是完全正常的磨合现象。

为什么新刹车片会叫?

新刹车片表面有一层防锈保护涂层,以及轻微的模具分离剂。

这些表面层在头几次刹车时被高温和摩擦力去除,产生短暂的高频叫声。

刹车盘和刹车片的接触面需要几次「磨合」才能完全吻合,磨合完成后声音自然消失。

通常头 1–3 天内、或经过约 100–200 次正常刹车后会自行消失。

什么情况是正常的?

冷机状态(早晨第一次刹车)有短暂叫声,热车后消失——正常,是刹车盘表面轻微氧化引起的。

低速轻踩时有声音,正常踩刹车时没有——正常。

换后 1–3 天有叫声,之后自然消失——正常磨合。

什么情况需要回去检查?

金属「磨擦」声(grinding)而非高频叫声——刹车片可能安装不正确,或刹车片厚度检测片碰到了刹车盘。

叫声超过一周仍未消失——磨合期已过,需要检查安装是否正确。

刹车时有明显振动——刹车片与刹车盘接触不平均,可能安装问题或刹车盘变形。

踩刹车时车子偏向一边——刹车力不均,需检查。

刹车片材质也有影响

半金属刹车片(semi-metallic):含铁粉,刹车效果好但噪音相对多,在冷机时尤其明显。

陶瓷刹车片(ceramic):噪音最少,粉尘也少,但价格较高。

如果你对噪音比较敏感,可以考虑升级陶瓷刹车片。

结论

换完刹车片头几天有叫声,通常正常,等一周看看。如果超过一周还叫、有振动、或有金属磨擦声,来 4M CARCARE 检查——我们会免费检查安装是否正确。

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