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LX570_OM_OM60Q78U_(U) 5758-1. Specifications
8
Vehicle specifications Glossary of tire terminology Tire related term Meaning
Cold tire inflation pressure Tire pressure when the vehicle has been parked for
three hours or more, or has no t been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sure The maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressure Cold tire inflation pressure recommended by a manu-
facturer
Accessory weight The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
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)
Curb weight The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
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 numb er of occupants specified
in the second column of Table 1
* that follows
Occupant distribution Distribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride leve lers, roof rack, heavy duty
battery, and special trim
Rim A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
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576
LX570_OM_OM60Q78U_(U) 8-1. Specifications
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 distance between rim flanges
Vehicle capacity weight
(Total load capacity) The rated cargo and luggage load plus 150 lb. (68 kg)
times the vehicle’s desi gnated seating capacity
Vehicle maximum load on
the tire The load on an individual tire that is determined by dis-
tributing 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 dis-
tributing to each axle its sh are of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1
* below), and dividing by two
Weather side 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 an d that is shaped to fit the
rim
Bead separation A breakdown of the bond between components in the
bead
Bias ply tire A pneumatic tire in which the ply cords that extend to
the beads are laid at altern ate angles substantially less
than 90 degrees to the centerline of the tread
Carcass The tire structure, except tread and sidewall rubber
which, when inflated, bears the load
Chunking The breaking away of pieces of the tread or sidewall
Cord The strands forming th e plies in the tire
Cord separation The parting of cords from adjacent rubber compounds
Cracking Any parting within the tread, sidewall, or innerliner of
the tire extending to cord materialTire related term Meaning
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578
LX570_OM_OM60Q78U_(U) 8-1. Specifications
Overall width The linear distance between the exteriors of the side-
walls of an inflated tire, including elev ations due to label-
ing, decorations, or protective bands or ribs
Passenger car tire A tire intended for use on passenger cars, multipurpose
passenger vehicles, and trucks, that have a gross vehicle
weight rating (GVWR) of 10,000 lb. or less.
Ply A layer of rubber-coat ed parallel cords
Ply separation A parting of rubber compou nd between adjacent plies
Pneumatic tire A mechanical device made of rubber, chemicals, fabric
and steel or other materials, that, when mounted on an
automotive wheel, provides the traction and contains
the gas or fluid that sustains the load
Radial ply tire A pneumatic tire in which the ply cords that extend to
the beads are laid at substa ntially 90 degrees to the
centerline of the tread
Reinforced tire A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Section width The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
Sidewall That portion of a tire between the tread and bead
Sidewall separation The parting of the rubber compound from the cord
material in the sidewall
Snow tire A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard Ref-
erence Test Tire, when using the snow traction test as
described in ASTM F-1805-00, Standard Test Method
for Single Wheel Driving Traction in a Straight Line on
Snow-and Ice-Covered Surf aces, and which is marked
with an Alpine Symbol ( ) on at least one sidewallTire related term Meaning
Page 627 of 628

627Alphabetical index
LX570_OM_OM60Q78U_(U) Warning lights ....................................... 520
ABS.......................................................... 520
Automatic headlight leveling
system ................................................... 521
Brake system........................... 520, 523
Center differential lock.................... 522
Charging system............................... 520
Low fuel level ....................................... 522
Low speed four-wheel
drive ...................................................... 522
Malfunction indicator lamp .......... 520
Master warning light......................... 522
Open door ............................................ 522
Parking brake....................................... 522
PCS............................................................ 521
Power steering system.................... 522
Seat belt reminder light................... 522
Slip indicator .......................................... 521
SRS ........................................................... 520
Tire pressure ........................................ 522 Warning messages.............................. 528
Warning reflector holder.................. 428
Washer ........................................... 231, 235
Checking ...............................................485
Preparing and checking
before winter .................................... 382
Switch ............................................ 231, 235
Washing and waxing .......................... 458
Weights .................................................... 558
Wheels ..................................................... 499
Replacing wheels .............................. 532
Size ...........................................................565
Window glasses...................................... 165
Window lock switch.............................. 165
Windows
Power windows....................................165
Rear window defogger ..................405
Washer ......................................... 231, 235
Windshield wiper de-icer ................. 405
Windshield wipers ................................. 231
Winter driving tips ............................... 382
Wireless charger.................................. 435
Wireless remote control key.............. 110
Locking/Unlocking ............................. 110
Panic mode ............................................... 111
Replacing the battery ......................503
WMA disc
*
* : Refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL”.