Audi R8 LMS 2018, Handbook

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400 – Front Axle, Anti-Roll Bar, Dampers and Steering
Version 1 2016-01-01
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400 – 2.7 Brake discs
It is highly recommended that the brake discs and pads are bedded according to
the instructions issued by Brembo (see below). Bedding should prevent the
creation of cracks in the discs and pads and increase the durability. It cannot be
guaranteed that shorter versions of the bedding procedure will produce the
same level of safety and service life of brake discs and pads.
Bedding (source: Brembo Bedding Procedure V1.6)
In contrast to normal organic materials RB330, 340 & 350 show a different
behaviour during the bedding procedure, characterised by very high initial mu
that decreases to a stable level (a bit lower than the first stops). No
modifications in bedding procedures are needed moving from standard organic
pads to these ones; the bedding is mainly useful for the preparation of the disc
rather than the pad material. For ideal bedding, we suggest a phase with a
progression of constant pressure stops (#35 - 40) at increasing speed avoiding,
as much as possible, rapid deceleration. This procedure helps to build a uniform
and stable transfer layer that will subsequently ensure the correct friction; in
this phase the pad material is not modified but works to create a deposit on the
disc surface. (This is the reason why pre-bedded pads are not as useful as pre-
bedded discs). Then, a few high energy stops (#4, 5), at higher deceleration, are
needed in order to stabilize the transfer layer and to promote a repeatable
friction profile during use.
Step 1
Check the disc before use, in particular, the surface conditions (roughness,
damages, geometry) and be sure that the fixing of the disc corresponds to the
manufacturer’s drawing (out of plane, float, etc.)
If the disc is used, it will probably be covered by a transfer layer from previous
usage, we suggest, if possible, to clean it (sandpaper above FEPA 600, brake