Should Brake Discs Be Replaced Along with Brake Pads?

2 Answers
VanSilas
07/29/25 12:06pm
Brake discs and brake pads do not need to be replaced together. Here is some relevant information about brake discs and brake pads: 1. Whether to replace brake discs depends on their thickness and wear condition. Brake discs are a crucial component in the braking system, categorized by structure into solid brake discs and ventilated discs. 2. Brake pads, also known as brake linings, are key safety parts in a car's braking system, consisting of a steel plate, adhesive insulation layer, and friction material. Below are some maintenance methods for brake pads and brake discs: 1. Develop good driving habits. 2. Avoid emergency braking. 3. Regularly inspect brake pads and brake discs. 4. Check the thickness of the friction material. 5. Always use original equipment manufacturer (OEM) brake pads and brake discs when replacing them.
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StAndrew
08/13/25 10:06pm
To be honest, replacing brake discs and pads isn't always necessary together, but I'd recommend doing so in most cases. Having worked in auto repair for quite some time, I often see customers only replacing new brake pads, which leads to uneven wear on old discs, causing vibration or noise during braking, and ultimately requiring rework. The main reason is that the contact surfaces between discs and pads need to match. New pads encountering grooves or unevenness on old discs' surfaces will affect braking efficiency and safety. I suggest checking disc thickness with calipers when replacing pads. If it's below the manufacturer's specified minimum or has deep scratches, replace them together without hesitation. This prevents issues like extended braking distance and tire imbalance, saving both hassle and money in the long run. Regular brake system maintenance, including checking disc and pad wear, is a crucial step in accident prevention.
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