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■
■Brake caliper
The LFA features front 6-piston and rear
4-piston aluminum alloy monoblock
calipers with dif ferential piston bore
sizing. This design takes advantage of
what is known as the 'self-servo effect',
allowing pressure from the unequally
sized pistons to push the pad against the
rotor in a progressive pattern, with the
leading piston applying the least force
and the trailing edge applying the most.
This wedge shape uses the rotational
movement of the disc to help the brake
p a d s ' b i t e ' i n t o t h e d i s c w i t h m o r e
effective pressure distribution, optimized
pressure equalization that helps realize
a more consistent supply of stopping
power. The LFA also features track-bred brake cooling ducts in the front bumper and
aerodynamic under covers designed to channel fresh, cool air to the brake system.
Each brake caliper piston (Front: 12
Rear: 8) employs a thermally insulated
aluminum construction with cooling
holes to help prevent the brake fluid from
boiling for enhanced high-temperature
endurance.
Parking brake calipers have been adopted
in order to lower vehicle weight. A switch-
operated EPB (Electric Parking Brake)
function has been adopted.
1.50 in. (38 mm)
1.26 in. (32 mm)
1.10 in. (28 mm)
1.10 in.
(28 mm)
1.18 in.
(30 mm) Front brake caliper
Rear brake caliper Aluminum brake caliper
piston
T h e r m a l l y i n s u l a t e d
c o n s t r u c t i o n w i t h
cooling holesBrake pad side
The shape of the cooling ducts in the
front bumper and contours of the under
covers have been designed to direct
cool air directly at the brake discs.
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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.
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Checking the engine
Components expected to operate at high speeds have been made as light and
precise as possible, realizing a superfast engine capable of revving from idle to 9,000
rpm in only 0.6 seconds.
In order to ensure adequate lubrication under high G-loads, a dry sump lubrication
system has been adopted.
The engine oil is cooled by a liquid-cooled oil cooler located in the valley between
each bank of cylinders and an air-cooled oil cooler housed within the front overhang.
In addition, two high-per formance radiators have been housed within the rear
overhang for an optimal front-rear weight balance.
A TFT LCD panel has been adopted to accurately transmit various information from
the engine to the driver. An analog-style digital tachometer displays engine speed
while other real-time engine information is displayed digitally for both superior visual
clarity and response.
An acrylic lens with a metal ring is positioned at the center of the meter to clearly
display the primary instruments and to create a three-dimensional appearance.
Page 110 of 128
108
Technical information
Major Dimensions & Vehicle Weights
Seating Capacity2
Minimum Ground Clearance 110 mm
Drag coefficient 0.31
Curb Weight 1,480 kg-1,590 kg*
Gross Vehicle Weight Rating 1,660 kg-1,755 kg*
Fuel Tank Capacity (Reference) 73 L (19.3 gal., 16.1 Imp. gal.)
S401-01
1,580 mm1,570 mm
930 mm - 940 mm* 2,605 mm
4,495 mm - 4,505 mm* 960 mm1,220 mm
- 1,265 mm*
1,895 mm
*: Figures vary according to equipment and destination.
