Will drilling holes in brake discs increase noise?

       Punching brake discs is a common modification method, mainly used to improve heat dissipation performance and reduce brake thermal attenuation. However, this design may also bring some noise issues while improving performance. The following is a detailed analysis of the relationship between brake disc drilling and noise:
       1. Design principle of perforated brake discs
       Perforated brake discs increase air circulation and improve heat dissipation performance by drilling holes on the surface of the brake disc. This design helps to quickly eliminate the heat and dust generated by friction, reduce thermal attenuation, and improve braking performance. In addition, the perforated design can also reduce the weight of the brake disc and improve handling response.
       2. Noise issue with perforated brake discs
       Although perforated brake discs have many performance advantages, they may also bring some noise issues. The following are the main reasons:
       Wind noise generated by air flow: When the perforated brake disc rotates at high speed, air passing through the hole will generate vortices, resulting in wind noise. This type of noise is particularly noticeable at high speeds, resembling a "whistling sound".
       Friction characteristics change: The perforated design changes the contact mode and friction characteristics between the brake disc and brake pad, which may result in a slight "rustling" sound when braking.
       The influence of brake pad material: If the quality of the brake pads is poor or the material is too hard, it may also exacerbate the noise problem. It is recommended to choose high-quality and softer brake pads to reduce noise.

       3. How to reduce the noise of perforated brake discs
       Although punching brake discs may produce some noise, its impact can be reduced by the following methods:
       Choose high-quality brake pads: Using high-quality, softer brake pads can reduce friction noise.
       Regular cleaning of holes: Keep the holes in the perforated brake disc clean to avoid dust and debris accumulation, which not only reduces noise but also improves heat dissipation performance.
       Installing soundproof materials: Installing soundproof materials inside the wheel hub can effectively reduce the propagation of noise.
       4. Applicable scenarios and suggestions
       Track and high-performance vehicles: For vehicles that frequently engage in intense driving or track day activities, the high-performance advantages of perforated brake discs far outweigh noise issues.
       Daily driving: If the vehicle is mainly used for daily commuting and is sensitive to noise, it is recommended to choose ordinary solid brake discs or lined brake discs, which perform better in noise control.
       Punching brake discs may indeed increase some noise, especially when driving at high speeds. However, this design has significant advantages in improving heat dissipation performance and reducing thermal decay. By selecting high-quality brake pads, regularly cleaning holes, and installing soundproofing materials, noise problems can be effectively reduced. When choosing brake discs, a balance should be made between the vehicle's usage scenario and individual needs.