2012 Lexus LFA wheel

50
Braking
The LFA is equipped with an ECB (Electronically Controlled Brake) system.
When the brake pedal is depressed, information on how much force is being used to
depress the pedal and the amount it is depressed is sent to the ECB computer. This
computer takes into account the vehicle’s overall condition using inputs from various
sensors and distributes the optimal amount of brake force to each individual wheel.
The ECB system uses an electric pump to generate hydraulic pressure, thereby
providing braking power without relying on engine vacuum. The use of this
technology ensures a consistent supply of effective braking power.
However, the detail behind the LFA brake system does not end with the ECB system.
Monoblock calipers and CCM (Carbon Ceramic Material) discs are just a few of the
other components that give the LFA its generous braking power. Furthermore, large
brake ducts have been proactively integrated in order to feed the brakes fresh, cold
air to keep them working at their optimum temperature for consistent performance.

Regarding the brake override system:
If the driver depresses the brake and accelerator pedals at the same time or if
the ECU judges that both acceleration and braking commands are being issued,
braking will be prioritized. The system will ignore the signal from the accelerator
pedal, close all throttle valves and provide the appropriate amount of braking force
demanded by the driver’s braking effort.

53
Braking
■
■Brake discs
Each brake disc is made from CCM (Carbon Ceramic Material) and features a two-
piece floating construction with an aluminum center hat. With this construction, disc
deformation due to expansion at high temperatures is more effectively mitigated;
thereby enabling a more consistent application of pressure from the brake pads for
stable and confidence-inspiring brake performance under any circumstances.
CCM discs provide the high stopping

power and thermal capacity needed
to provide consistent braking at high
speeds.
The discs are impregnated with silicone
material to ensure outstanding stopping
power and endurance when they are not
yet at optimal operating temperature or
in wet conditions. However, one should
avoid spraying water directly onto a hot
brake disc. Fur thermore, CCM discs
are susceptible to microscopic cracking
and local damage resulting from a direct
impact. Care is required when installing a
tire and wheel as accidental contact may
result in damage.

Bedding-in new brake pads or rotors:
In order to ensure maximum performance from a set of replacement CCM discs
or brake pads, it is necessary to bed them in. Please consult your Lexus dealer
regarding the appropriate bedding procedure. The LFA is shipped from the factory
with pre-bedded CCM discs and brake pads.
The disc diameters are 15.35 in. (390
mm) for the front and 14.17 in. (360 mm)
for the rear. Both front and rear discs are
ventilated with 0.20 in. (5 mm) diameter
d r i l l e d c o o l i n g h o l e s . T h e a d o p t i o n o f
CCM as opposed to conventional cast-iron
results in a reduction in unsprung weight of
approximately 11.03 lb. (5 kg) per wheel.

66
Using the meter
When the control pad on the steering wheel is pressed to the right, the ring moves
with the display to the right of the screen in order to accommodate the menu.
The meter can be customized to display various functions.
■
■Using the menu
1 Press right on the control pad to
show the menu display.
2 Press up and down on the control
pad to select the menu item.
3 Press right on the control pad to go to
the next display. Follow the instruction
shown on the display.
4 When setting is complete, press and
hold left on the control pad to return
to the normal display.
Pressing left once on the control pad shows the previous display.

78
■
■Washing the vehicle
To prevent paint deterioration and corrosion on the body and components (wheels
etc.), wash the vehicle immediately if it becomes dirty. Hand washing is recommended
to preserve the paint finish.
1 Working from top to bottom, liberally apply water to the vehicle body, wheel wells
and underside of the vehicle to remove any dirt and dust.
2 Wash the vehicle body using a sponge or soft cloth, such as a chamois.
3 For hard-to-remove marks, use a neutral detergent and rinse thoroughly with
water.
4 Wipe away any water.
Maintaining the vehicle’s exterior

92
Refer to the following points in order to preserve the performance and appearance
of the LFA during long-term storage. These points are only guidelines. To ensure that
appropriate steps are taken in consideration of the storage duration and environment,
consult your Lexus dealer in advance.
■
■Storage environment
A dry, covered, flat location away from natural elements such as wind, rain and direct
sunlight is ideal.
Exposure to the elements can cause corrosion and scratches, while long-term
exposure to direct sunlight can cause the interior and exterior finish to fade or become
discolored. Additionally, as moisture from the ground may cause corrosion even if the
vehicle is stored in a covered location, a dry place is ideal.
■
■Cleaning
As dirt becomes harder to remove with time, both the vehicle’s interior and exterior
should be cleaned before the vehicle is put into long-term storage.
■
■Tires
Inflate the tires to approximately 44 psi (300 kPa, 3.0 kgf/cm2 or,bar,) and use wheel
chocks to prevent the vehicle from moving.
In order to help reduce flat spots from occurring during storage, regularly rotate the
tires so that the same point is n’ot always resting on the ground. Additionally, if the
tires develop flat spots during the storage interval, drive the vehicle slowly until any flat
spot-induced vibrations are no longer felt before resuming normal use.
■
■Parking brake
Use wheel chocks to prevent the vehicle from moving as it should be stored with the
parking brake disengaged.
Advice for long-term storage

96
■
■Manually releasing the parking brake
Apply wheel chocks before manually releasing the parking brake.
1 Open the rear hatch and remove the
cover.
M a n u a l l y u n l o c k i n g t h e r e a r h a t c h
(
" P. 95)
2 Release the belt and take out the tool
bag.
Take the parking brake release tool and the
screwdriver handle out of the tool bag.

100
Use a flatbed truck suitable for vehicles with low ground clearance. To prevent body
damage, do not tow with a wheel-lift or sling type truck. We recommend having your
Lexus dealer or a commercial towing service load and unload the vehicle whenever
possible.
Please refer to the following dimensions when choosing an appropriate tow/transport
vehicle.
Approach angleMinimum ground
clearance Break-over angleDeparture angle
7.1 degrees4.3 in. (110 mm) 11.1 degrees11.6 degrees
■
■Loading the vehicle onto a transport vehicle
1 Open the rear hatch and remove the
cover.
Rear hatch opener switch (" P. 12)
Manually unlock the rear hatch (
" P. 95)
When transporting the vehicle

112
Brake and Tires
Brake Calipers FrontOpposed 6-piston monoblock
Rear Opposed 4-piston monoblock
Brake Rotors CCM
(Carbon Ceramic Material)
Brake Rotor (diameter) Front
f390 mm x 34V
Rear f360 mm x 28V
Brake System ECB
(Electronically Controlled Brake)
Brake Fluid Type FMVSS No.116 DOT3
Brake Fluid Capacity RHD1.2L (1.3 qt., 1.1 lmp. qt)
LHD 1.1L (1.2 qt., 1.0 Imp. qt.)
Parking Brake EPB (Electric Parking Brake)
Wheel Size Front20 x 9.5J +45
Rear 20 x 11.5J +45
Tire Size Front265/35ZR20 (95Y)
Rear 305/30ZR20 (99Y)
Suspension Type FrontDouble Wishbone
Rear Multi-link
Steering Gear Type Rack and Pinion
Steering Gear Ratio 14.3
Lock to Lock 2.35
Power Steering Type EPS (Electric Power Steering)
Stability control VDIM (Vehicle Dynamics
Integrated Management)
Electrical System
Battery Size S75D31R
Voltage & Amp.hr. (5HR) 12V-56AH
Alternator Output 2,640 W
Starter Output 1.7 kW