What is the reason for feeling less braking power after installing new brake pads?

[BradyAnn]

Just installed new brake pads may feel less effective in braking because their surface is not perfectly flat. During braking, small protrusions on the surface will make initial contact with the brake disc, resulting in reduced contact area and lower friction. This condition will improve after a proper break-in period. More details are as follows: 1. Brake pads are a crucial component of the braking system and a wearable part. It's normal to experience slightly reduced braking force immediately after replacing them. 2. Automotive brake pads, also called brake linings, refer to the friction materials fixed on the rotating brake drum or disc. The friction lining and blocks bear external pressure to create friction, thereby achieving vehicle deceleration.

[LilyLynn]

After installing new brake pads, the feeling of insufficient braking is usually because the brake pads and rotors haven't completed their break-in period. The surface of new brake pads is relatively smooth, and it takes driving several dozen or even a hundred kilometers for them to fully wear in and achieve optimal friction with the rotors. I experienced this myself after changing a set—initially, the brakes felt mushy, which was quite unsettling. Additionally, improper installation, such as misaligned brake pads or debris getting stuck, can also affect braking performance. Don't forget to check if the brake fluid is at the proper level or if air has entered the system, as air can make the pedal feel soft and reduce braking effectiveness. I recommend taking a short trip to allow the pads to break in. If the problem persists, visit a professional shop immediately—safety comes first. Developing a habit of regularly inspecting your brake system can help avoid such issues in the future.

[DelOmar]

Last month after replacing my brake pads, I also felt the braking wasn't effective. It took some time to figure out the issue. Most likely, the new brake pads need a break-in period - when first installed, the surface is too smooth and lacks sufficient friction. You might want to try driving around the city for a few rounds, gently applying the brakes to let them naturally wear in. Additionally, you can check some simple things yourself: press the brake pedal - if it feels spongy, there might be air in the system; check if the brake fluid reservoir level is adequate; ensure the new pads are installed correctly without misalignment, and that the retaining clips or wheel cylinders are functioning properly. I remember one time when the installer was careless and didn't clean off the residue from the old pads, causing unstable braking. For the first few dozen kilometers after pad replacement, drive slower and avoid sudden braking. If the problem persists, take it to a repair shop to have the system pressure tested - don't push your luck with safety risks.

[DeReagan]

New brake pads not gripping well is often due to insufficient bedding-in or installation issues. As someone who's worked on countless brake systems over years of auto repair, new pads typically need dozens of kilometers to reach optimal performance - poor initial braking is normal. Air in the lines makes the pedal feel spongy and less responsive, while material mismatch (like ceramic pads with old rotors) can reduce effectiveness. Improper torque during installation also compromises braking power. Drive gently to allow proper bedding-in - firm pedal feel indicates safety. If issues arise, stop immediately for inspection - never delay repairs.