The phenomena of noise, vibration and harshness can affect the pleasant driving experience of any vehicle.
Brake noise is created by a high pitch vibration which you can hear. Imagine tracing the rim of a wineglass containing water with a wet finger. The glass resonates, and a sound is generated. The vibration is created by the friction caused by your finger tracing around the rim of the wineglass. This, in turn, resonates within the glass containing the water, producing a sound.
The same principle can be applied to the noises and vibrations generated by the friction between brake pads and discs. These are transmitted to the brake calipers, and, as a result, the entire brake system resonates to produce unpleasant noise.
Many factors must be considered to suppress brake noise and vibrations. These include the quality of materials, the shape and torsion of the components, the driving environment, vehicle speed and brake temperature.
Noise is often caused from the vibration of the pad against the disc where full contact is not taking place or failing or faulty parts such as shims and pins which have lost their tension and create sound waves. These sound waves can either be the high-pitched vibrations you can hear or a low pitch vibration which you can feel.
Minimising vibrations and noise
During the development of a new Blue Print brake pad, many technologies are used to improve the comfort for both the driver and passengers by minimising these unpleasant vibrations and noises.
Blue Print matches or exceeds the specifications of the OE brake pad, therefore retaining the original manufacturer’s benefits and features – such as:
• Chamfering and/or the addition of slots to ‘tune’ the pad, so it makes less noise. The chamfers and slots change the natural frequency at which the brake pad oscillates, so it runs quieter than a brake pad without these features.
• There are also various types of shims which may also be fitted to the steel backing plate to dampen vibrations between the pad and caliper. These shims act as a cushion; they absorb noise-producing vibrations. Some shims may have a half-moon cut-out present, which allows the piston to push the brake pad at the desired angle, thus reducing noise and creating a more unified and even pad wear. These are generally fitted to directional brake pads which can only be installed in one direction.
• Anti-rattle clips or springs that minimise play between the pads and caliper further to dampen vibrations during the initial engagement of the pad.
• Additional weights: These are added during the development phase to minimise vibrations and noise.
For quiet, effective brakes, make sure you fit quality braking parts and the appropriate accessories from Blue Print’s extensive range whenever you service the braking system.
Rely on tested OE matching quality replacement parts from Blue Print. The entire range of braking parts can be found at partsfinder.bilsteingroup.com.
Why Blue Print Braking?
• Complete All-Makes range of more than 3,400 brake friction components for Asian and European vehicle applications
• Coverage of over 98% of all popular passenger cars and LCVs on European roads (launched from the year 2000 and onwards) for brake discs and pads
• Keeping pace with every new vehicle released into the market according to our ‘Fast to Market’ philosophy
• Use of Official Manufacturer Electronic Parts Catalogues ensures ultimate levels of accuracy
• All components are developed and manufactured to meet OE specifications and to be direct replacements
• Rigorous and systematic quality checks to assure the continuous supply of quality products.