2012 Lexus LFA weight

273
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1 /2 of the
Gross Axle Weight Ratings (GAWR) of either the front axle or the rear axle, which-
ever is greater.
■Tire types
●Summer tires
Summer tires are high-speed performance tires best suited to highway driving
under dry conditions. Since summer tires do not have the same traction perfor-
mance as snow tires, summer tires are inadequate for driving on snow-covered
or icy roads. For driving on snow-covered roads or icy roads, the use of snow tires
is recommended. When installing snow tires, be sure to replace all four tires.
●All season tires
All season tires are designed to provide better traction in snow and to be ade-
quate for driving in most winter conditions as well as for use year-round. All sea-
son tires, however, do not have adequate traction performance compared with
snow tires in heavy or loose snow. Also, al l season tires fall short in acceleration
and handling performance compared with summer tires in highway driving.
●Snow tires
For driving on snow-covered roads or ic y roads, we recommend using snow tires.
If you need snow tires, select tires of the same size, construction and load capac-
ity as the originally installed tires. Since your vehicle has radial tires as original
equipment, make sure your snow tires also have radial construction. Do not install
studded tires without first checking local regulations for possible restrictions.
Snow tires should be installed on all wheels. ( P. 1 8 0 )
■Initializing the tire pressure warning system
Initialize the system with the tire inflatio n pressure adjusted to the specified level.
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the load
limit at maximum cold tire inflation pressure
mentioned on the sidewall of the tire.
(
P. 3 7 1 )

279
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least once a month.
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating, have it checked by your Lexus dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours or has not been driven for
more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure
reading.
●Always use a tire pressure gauge.
The appearance of the tire can be mislea ding. In addition, tire inflation pressure
that is even just a few pounds off can affect ride quality and handling.
●Do not reduce tire inflation pressure after driving. It is normal for tire inflation
pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is bal-
anced.
■Tire inflation pressure display
Tire inflation pressure can be checked on the meter's “Tire Pressure” display.
(  P. 1 3 2 )

377
6-1. Specifications
6
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Accessory weight The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Cold tire inflation pres-
sure Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Curb weight The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipp
ed, air conditioning and
additional weight optional engine
Maximum inflation pres-
sure The maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Maximum loaded vehicle
weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Production options
weight The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim

378
6-1. Specifications
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
Occupant distribution Distribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Recommended inflation
pressure Cold tire inflation pressure recommended by a man-
ufacturer.
Rim A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter) Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation The industry manufacturer's designation for a rim by
style or code
Rim width Nominal distan ce between rim flanges
Vehicle maximum load on
the tire The load on an individual tire that is determined by
distributing to each axle its share of the maximum
loaded vehicle weight, and dividing by two
Vehicle normal load on
the tire The load on an individual tire that is determined by
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight (dis-
tributed in accordance with Table 1
* below), and
dividing by two
We a t h e r s i d e The surface area of the rim not covered by the
inflated tire
Bead The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separation A breakdown of the bond between components in
the bead
Tire related termMeaning

380
6-1. Specifications
Intended outboard side-
wall(a) The sidewall that contains a whitewall, bears
white lettering, or bear s manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire A tire designated by its
manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load rating The maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load rating The load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressure The maximum cold inflation pressure to which a tire
may be inflated
Measuring rim The rim on which a tire is fitted for physical dimension
requirements
Open splice Any parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10000 lb. or
less.
Ply A layer of rubber-coated parallel cords
Tire related termMeaning

400
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
ABS Anti-lock Brake System
ALR Automatic Locking Retractor
ANSI American National Standards Institute
ASG Automated Sequential Gearbox
CCM Carbon Ceramic Material
CFRP Carbon Fiber Reinforced Plastics
CRS Child Restraint System
ECU Electronic Control Unit
EDR Event Data Recorder
ELR Emergency Locking Retractor
EPS Electric Power Steering
FCC Federal Communications Commission
GAWR Gross Axle Weight Rating
GPS Global Positioning System
I/M Emission inspection and maintenance
ICNIRP International Commission on Non-Ionizing Radiation
Protection
LED Light Emitting Diode
M + S Mud and Snow
MMT Methylcyclopentadienyl Manganese Tricarbonyl
MTBE Methyl Tertiary Butyl Ether
NCRP National Council on Radiation Protection and Measure-
ment
NHTSA National Highway Traffic Safety Administration
OBD On Board Diagnostics

414
Alphabetical index
Warning buzzers ................................... 312
Warning lights ......................................... 312
Warning messages .............................. 322
WarningsDischarge headlights...................... 300
Replacing light bulbs....................... 300
Washer Capacity ................................................. 362
Checking ............................................... 327
Preparing and checking before winter ..................................... 180
Switch ....................................................... 160
Warning message............................. 327
Washing and waxing ...........................228
Weight Cargo capacity..................................... 176
Load limits ............................................... 179
Weight*
2
Wheel bolts .............................................. 281
Wheels ....................................................... 281Care ...........................................................281
Size ...........................................................366
Window glasses ...................................... 46
Windows Power windows..................................... 46
Rear window defogger ....................201
Windshield wipers ............................. 160
Washer .................................................... 160
Windshield wipers................................. 160
Wireless remote control key If you lose your wireless remote control................................. 344
Key ................................................................22
Replacing the battery ......................285
W
*2: Refer to “Inside the LFA”.