Visit the Newsroom and browse the latest news articles and press releases to find out more about Delphi.

About Us

With a presence in more than 150 countries, and a global network of over 2750 service centres, Delphi aftermarket provides OE specification end-to-end solutions from components to sophisticated software solutions.

Delphi Expert replacing the front disks and brake pads of a raised vehicle.
Resource Centre 3 min read

An even quieter ride with Delphi’ directional brake pads

Share Resource:
Braking Maintenance Solutions Pads How it works Distributors DIYers Drivers Technicians 3 min read

Resource Highlights

In this article, you find out more about our directional brake pads.   

As automotive technology evolves, and with it customer expectations for a quieter more relaxing ride, noise, vibration and harshness (NVH) reducing technologies are becoming a must. Whilst the emergence of quieter, electric and hybrid vehicle technologies should, in theory, lower NVH levels, the reality is very different – the loss of the engine masking sound is simply exposing other areas such as suspension, HVAC and braking – noises that may not have been obvious to the driver beforehand. Add to this greater emphasis on the whole in-car experience, with ever sophtisticated infotainment and connectivity systems, and noise issues are becoming an area of increasing concern for vehicle and parts manufacturers alike.

Cue our range of directional brake pads. Featuring either a chamfered friction surface or a crescent cut out of the shim, they must be mounted in a specific direction for optimal pad to disc contact. By introducing the pad to the disc at a gentle angle, the likelihood of both noise and vibration is significantly reduced for even quieter braking.

Chamfer or crescent?

You won’t be surprised to learn that chamfer directional brake pads use a chamfer, a transitional surface between two adjoining faces, on either the leading edge or both edges of the pad. This helps to prevent the leading edge of the pad from lifting from the disc for maximum pad to disc contact, encourages even pad wear and reduces both noise and vibration.

Similarly, a crescent cut-out directional brake pad has a crescent or half-moon shape cut out from the shim. The shim, made up of finely tuned layers of dampening material bonded to the pad assembly, helps to reduce both the transmission and amplitude of vibration and acts as a thermal barrier, ensuring uniform temperatures across the pad, and in turn consistent brake torque. The addition of a cut-out allows the piston to push the brake pad at the optimal angle, reducing noise and aiding even pad wear. 

It’s all in the fitting

Whilst chamfer and shims are nothing new - we’ve been fitting them on our pads, as per the OE, for years – the way the pads are installed is. As their name suggests ‘directional pads’ must be installed in a specific direction to ensure optimal noise performance. In contrast, fitting them in the wrong direction can reduce braking efficiency, and may increase the possibility of brake noise, the very thing these pads are designed to prevent. Because of this, it pays to take the time to learn how to install them the right way.

Which way is right?

Many Delphi directional pads use either a letter, indicating which side of the vehicle the pad should be fitted to, or an arrow showing the rotational direction of the disc and hence the direction in which the pad should be fitted. If no arrow is present, then the following ground rules apply:

  • For pads fitted with a one chamfer, introduce the chamfer, the largest if more than one, at the leading edge where the pad and disc first come into contact.
  • If the pad features a cut-out, position the crescent or half-moon at the leading edge of the pad. 

Choosing Delphi!

Once you’ve got to grips with the basics, fitting directional pads will become a straightforward job. The choice of which brand to fit is just as easy. With an OE-matching range, we cover nearly 4 million vehicles, with important applications such as Audi Q7, Q8, BMW 525, 530, 540, 725, 730, Ford Galaxy, Mondeo, S-Max, Mini Cooper S Clubman, Countryman and Volvo XC90. Future parts will be developed in line with the OE.


The specified form no longer exists or is currently unpublished.

Related article resources and products

    Braking Caliper slider kits

    Delphi Caliper Slider Kits

    Whilst it’s unlikely you’ll ever need to replace the entire caliper, they can seize over time. When this happens, the caliper will not be able to fully retract the brake pad from the disc, creating friction even when the brakes are not applied. This can cause many problems including brake drag, brake overheat and hot spots on the brake discs, so it goes without saying that you’ll want to look after them. With a little bit of TLC you can help ensure the caliper lasts the life of the vehicle, as well as prevent potentially irreparable damage to both the pads and discs. Cue Delphi’s caliper slider kits. Available for both right and left calipers, each kit includes new sliders, seals, slider lubricating grease and mounting bolts… everything you need for a professional and efficient caliper service.
    Air Conditioning & Thermal Maintenance Solutions

    Cabin Air Filters

    The cabin air filter is responsible for cleaning outside air entering the vehicle. Because up to 100,000 litres of air can be blown into the vehicle’s interior in less than an hour, it can easily become clogged with debris. Unfortunately, a blocked cabin filter will not be effective, resulting in a below-par heating and cooling system, and causing the air inside the vehicle to become more polluted than the air outside up to six times more. Similarly, bacteria and fungi can accumulate in the filter, leading to unpleasant smells in the cabin. Fitting a high-performance cabin filter, such as Delphi, is essential in eliminating these harmful pollutants and odours, safeguarding both you and the air conditioning (A/C) system.  
      where to buy

      Find out where to buy Delphi parts

      where to repair

      Find your nearest Service & Diesel Centres

      Select your Region