C-8G8993 - Fitting Instructions - Carbon Metallic brake pads bedding in procedure

New Brake Discs

Thoroughly clean the new discs with a solvent degreaser such as brake cleaner or cellulose thinners to prevent pad contamination, then follow the following procedure to bed the new brakes in.

1. Perform several light stops (‘snubs’) on the first lap using progressively higher pedal pressure and braking force from higher speeds. The brakes should become more effective at each successive stop. The aim is to gradually bring the discs/pad temperature up, generally achieved after 6-10 snubs over the first two laps. DO NOT drag the brakes during the bedding-in process – i.e. no brakes and power on together – since this will most likely glaze the pads.

2. Do another 2 laps at near racing speeds, using the brakes as you would normally – this brings the whole core temperature of the brakes up to that experienced in racing. It will also impart a layer of the pad material to the disc (slate grey discolouration of the disc) allowing the pads to give optimum performance.

3. Do a cooling down lap and return to the pits. Allow the brakes/discs to cool down as much a is practical – all the way to ambient if at all possible – as this will increase disc life. Do not let the car sit statically all the time, move the car a small amount periodically so the pad is not in contact with the disc at one point whilst cooling down.

Used Brake Discs

Where the discs have already been used with these carbon metallic pads before, bedding in is very quick for the pads. If the discs were previously used with non- carbon metallic pads or pads of other manufacturers the process will take slightly longer. It is recommended to clean the disc friction surfaces with abrasive cloth prior to installation of the carbon metallic pads. Take care to do this uniformally to avoid causing high spots on the discs. Clean thoroughly with a solvent degreaser such as brake cleaner or cellulose thinners. Perform several light stops (‘snubs’) on the first lap using progressively higher pedal pressure and braking force from higher speeds.

The brakes should become more effective at each successive stop. The aim is to gradually bring the discs/pad temperature up, generally achieved after 6-8 snubs over the first two laps. DO NOT drag the brakes during the bedding-in process – i.e. no brakes and power on together – since this will most likely glaze the pads.

If other pad types have been used and the discs were not cleaned as described earlier, this process is likely to take 3-5 laps because the existing friction material deposits must be cleaned from the disc before the carbon metallic pads can impart it’s own deposits.

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