Vibration and noise when applying the front disc brake on a newly bought motorcycle could be caused by several factors. Here are a few potential causes to consider:
Brake Disc Alignment: Improper alignment of the brake disc can cause vibration and noise when the brakes are applied. Ensure that the brake disc is properly aligned and centered within the brake caliper.
Brake Caliper or Pad Issues: Check if the brake caliper or brake pads are functioning correctly. If there is any misalignment or uneven wear, it can cause vibrations and noise. Inspect the caliper for any loose bolts or components and ensure the brake pads are in good condition.
Rotor Warp: A warped or distorted brake rotor can result in vibration and noise during braking. This can occur due to excessive heat or improper installation. If the rotor is warped, it may need to be replaced or resurfaced by a professional technician.
Loose or Faulty Components: Inspect the handlebar, fork, and other relevant components for any loose or worn-out parts. Loose bolts or worn bearings can contribute to vibrations and noise. Ensure all components are properly tightened and in good condition.
Bedding-in Period: It's possible that the brake system needs some time to properly bed-in. During the initial miles, the brake pads and rotors may go through a break-in process, which can result in temporary vibrations and noise. If the issue persists beyond the break-in period, further inspection may be necessary.
It's important to address any issues with the front disc brake promptly, as braking performance and safety can be affected. If you are unsure about diagnosing or fixing the problem yourself, it's recommended to consult a qualified technician or visit an authorized service center for a professional evaluation and assistance.