2021 NISSAN GT-R Owners Manual

BRAKE SYSTEM INFORMATION
Cracks on brake padThe friction material of the GT-R disc
brake pad is bonded to the pad backing
plate more strongly than conventional
brake pads to withstand the high brake
temperatures. The friction material and
backing plate expand due to heat at
different rates. Some cracks may be on
the surface of the friction material due to
the differences in expansion rates and the
strong bond between the friction material
and backing plate. The cracks do not
indicate the brake pads need to be
replaced. However, depending on the
condition of the cracks, the pads may
need to be replaced. It is recommended
you contact a GT-R certified NISSAN deal-
er.
. This is due to the temperature
differential that occurs because the sur-
faces of the disc rotors become hot while
the inside of the rotor is still cold. How-
ever, this poses no problem in terms of
brake performance, and does not indicate
a malfunction. The brakes do not need to

Rattles from brake pads and creaks
during braking
The high performance brake system of
vehicles equipped with the NCCB (NISSAN
Carbon Ceramic Brake) has more clear-
ance between its brake pad and brake
caliper than regular vehicles, and it uses a
large brake pad to ensure stable brakingperformance under a wide range of driv-
ing conditions such as extremely high
temperature areas or low temperature
areas like snow-covered roads. Accord-
ingly, you may hear light rattles from the
brake pad area when driving over a step,
which is not a malfunction. In addition,
you will hear creaks because of the
characteristics of the material for the disc
rotor. These creaks reduce with time and
wear.
Never park your vehicle for a long time
with the brake system wet.
The materials used for the brake disc
rotor and brake pads for specified NCCB
(NISSAN Carbon Ceramic Brake) are dif-
ferent from those used for the standard
brake system in GT-R. The rotor and pads
will be protected from adhesion caused
by rusting. However, never park your
vehicle for a long time with the brake
system wet. This helps maintain the brake
disc rotor and brake pads for a long time
and prevents an influence on the material
composition of the carbon ceramic rotor
and deterioration in the joint of brake disc
rotor’s full floating structure. Especially
during winter, be sure to park your vehicle
with the brake disc rotor and pads dry to
prevent them from being frozen and
damaged in below freezing temperature
conditions. The carbon ceramic brake forGT-R includes air bubbles in the rotor and
pads. Note that leaving them in the wet
condition tends to cause adhesion due to
freezing.
.
A screeching noise may be heard
when the brake pedal is depressed:
— When driving the vehicle for the first
time in the morning,
— After leaving the vehicle parked for extended periods of time, or
— When the vehicle is damp following rain showers or washing the vehi-
cle.
These sounds are normal. The noise is
caused when the brake pads absorb
moisture, and the noise stops after
the brake is applied several times.
. A screeching noise may also be heard
when the brake pedal is depressed:
— When repeatedly applying gentle
braking, especially on a curve at a
low speed, or
— When the brake rotors have circular scores with the brake temperature
high.
. The NCCB (NISSAN Carbon Ceramic
Brake) causes more screeching noise
in cold weather conditions than in
normal weather conditions.
GT-R Overview
GTR-29

to
position before the vehicle stops, you may not be able
to shift gear or it may take longer to shift gear. Make sure to depress the brake pedal and check that the vehicle has
stopped before shifting.
Multiple-disc wet
clutch
.
When stopping the vehicle with the shift lever in the
orposition. Move the shift lever after turning off the system check
display. Also, it is normal to hear clicking noises during the transmission systems check.
Changing modes
.
The higher shift speeds in the
position may result in shift shock and jerkiness when starting or shifting.
.
The quickest shifting in the R mode with the transmission in the
position is available when the engine speed is high.
However, the transmission may shift more slowly when the engine speed is low.
Mechanical Limited Slip
Differential (LSD) If the vehicle accelerates from a stop with the steering wheel turned half a turn in cold temperatures, the inner wheel tire
may slip and some noise or vibration may be heard. This phenomenon occurs because the viscosity of the differential oil
becomes thicker and the Limited Slip Differential (LSD) operates with increasing load. When the steering wheel is returned
to the straight ahead position or the differential oil warms up, the noise and vibration decrease.