Dodge 2015 Charger SRT 392 Operating Instructions Manual page 168

shaft, and half shaft boots should be inspected
for wear or damage after every track event.
Track usage results in increased operating tem-
peratures of the engine, transmission, clutch,
driveline and brake system. This increased op-
erating temperature may affect Noise Vibration
Harshness (NVH) countermeasures designed
into your vehicle. New components may need to
be installed to return the system to the original
NVH performance.
Recommended tire pressure for track use:
• Challenger/Charger: 40 psi hot, 32 psi front,
30 psi rear cold
Track Burnishing Your Brakes
To avoid "green lining fade" during track use,
the brake pads and rotors must have a thermal
burnish for factory installed components or
when new brake friction components are in-
stalled:
1. Utilize one track session to burnish brakes
by driving at 75% speed. Brake at approxi-
mately 0.60 – 0.80g Max without ABS inter-
vention.
2. Lap the track in this manner until you start
smelling the brakes. Continue for another ½
lap at speed, then do a two lap cool down
with minimal brake application. Make sure
the brakes are not smoking. If they are, do
another cool down lap.
3. Do not continue for more than one full bur-
nishing lap after you start smelling the
brakes. Do not get them smoking heavily.
This will get them too hot and will negatively
affect their life in future track use.
4. Allow the vehicle to sit and cool in the
paddock for at least 30 minutes. If an infra-
red thermal gun is available, allow the rotors
to cool to 200° F (93.3° C) before going back
out.
5. There should be a thin, ashy layer when
inspecting the pads installed in the caliper. If
the ash layer is more than ½ the thickness of
the brake pad material, this is an indication
of too aggressive of a burnish.
6. Sometimes, a second burnish session is
required. If the brake pads start smelling in
the next track session, reduce speed and
braking deceleration to burnish targets and
follow steps 2 through 4.
7. New brake pads installed on old rotors still
need to be burnished. New rotors installed
with old pads should be burnished at the
track, or street driven for 300 city miles, to
develop an adequate lining transfer layer on
the rotor surface prior to track use.
8. Rotors that pulsate during track use should
be replaced. Resurfacing of the rotors is not
recommended, as it removes mass from the
rotor, reducing its thermal capacity. Resur-
facing also thins the rotor cheek, making it
less robust and increasing the likelihood of
pulsation in further track use.
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