Specifications

297x198_RS5_09_Bild_34 34 31.10.11 16:31
34 Brake systems
The standard 18-inch high-performance brake
system takes a powerful hold with its 8-piston
fixed callipers on the front axle. A single-piston
floating calliper is used on the rear axle. The
wave brake discs comprise a cast friction ring
with a wave-shaped outer contour which is
connected to the brake disc chamber by means
of aluminium pins. This so-called floating
mounting ensures that the friction ring remains
tension-free to a major extent, improving
stability under extreme temperature loads.
The axial perforation and cooling channels for
internal ventilation also increase the brake
discs’ performance. The use of aluminium and
the characteristic geometry of the friction
rings reduce the weight of the brake discs,
thus improving the balance of the unsprung
masses.
The optional 19-inch ceramic brake* with
6-piston fixed callipers at the front is available
for even more demanding loads. With this
brake system, the brake discs on the front axle
are made of a carbon-fibre reinforced ceramic
material. This is based on hard and abrasion-
proof silicon carbide with high-strength carbon
fibres embedded. This combination results in
an enormous abrasion resistance which allows
extremely high mileages to be achieved and
at the same time reduces sensitivity to high
thermal loads. In addition, the material is
lighter than steel discs.
Nothing can stop
a top athlete.
Except for a top brake system.
qRS5_18_2011_07.indd 34 14.12.11 12:05