LEXUS NX250 350 2023 Owners Manual

TypicalDOTandTireIdentificationNumber(TIN)

GlossaryoftireterminologyTire related termMeaningCold tire inflation pressureTire 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 conditionMaximum inflation pressureThe maximum cold inflated pressure to which a tire may be inflated, shown on the
sidewall of the tireRecommended inflation pressureCold tire inflation pressure recommended
by a manufacturerAccessory weightThe combined weight (in excess of those
standard items which may be replaced) of
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 weightThe weight of a motor vehicle with standard
equipment, including the maximum capaci-
ty of fuel, oil and coolant, and if so equip-
ped, air conditioning and additional weight
optional engineMaximum loaded vehicle weightThe sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weightNormal occupant weight150 lb. (68 kg) times the number of occu-
pants specified in the second column of
Table 1 (1)
that followsOccupant distributionDistribution of occupants in a vehicle as
specified in the third column of Table 1 (1)
below10-1.Specifications
69310
Vehicle specifications

Tire related termMeaningProduction options weightThe combined weight of installed regularproduction 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 trimRimA metal support for a tire or a tire and
tube assembly upon which the tire beads
are seatedRim diameter (Wheel diameter)Nominal diameter of the bead seatRim size designationRim diameter and widthRim type designationThe industry manufacturerjs designation for
a rim by style or codeRim widthNominal distance between rim flangesVehicle capacity weight (Total load capaci-
ty)The rated cargo and luggage load plus 150
lb. (68 kg) times the vehicle
s designated
seating capacityVehicle maximum load on the tireThe load on an individual tire that is deter-
mined by distributing to each axle its share
of the maximum loaded vehicle weight, and
dividing by twoVehicle normal load on the tireThe load on an individual tire that is deter-
mined by distributing to each axle its share
of curb weight, accessory weight, and nor-
mal occupant weight (distributed in accord-
ance with Table 1 (1)
below), and dividing by
twoWeather sideThe surface area of the rim not covered by
the inflated tireBeadThe part of the tire that is made of steel
wires, wrapped or reinforced by ply cords
and that is shaped to fit the rimBead separationA breakdown of the bond between compo-
nents in the bead10-1.Specifications
694

Tire related termMeaningBias ply tireA pneumatic tire in which the ply cords that
extend to the beads are laid at alternate
angles substantially less than 90 degrees to the centerline of the treadCarcassThe tire structure, except tread and sidewall rubber which, when inflated, bears the loadChunkingThe breaking away of pieces of the tread or
sidewallCordThe strands forming the plies in the tireCord separationThe parting of cords from adjacent rubber
compoundsCrackingAny parting within the tread, sidewall, or
innerliner of the tire extending to cord ma-
terialCTA pneumatic tire with an inverted flange tire
and rim system in which the rim is designed
with rim flanges pointed radially inward and
the tire is designed to fit on the underside
of the rim in a manner that encloses the rim
flanges inside the air cavity of the tireExtra load tireA tire designed to operate at higher loads
and at higher inflation pressures than the
corresponding standard tireGrooveThe space between two adjacent tread ribsInnerlinerThe layer(s) forming the inside surface of
a tubeless tire that contains the inflating
medium within the tireInnerliner separationThe parting of the innerliner from cord ma- terial in the carcass10-1.Specifications
69510
Vehicle specifications

Tire related termMeaningIntended outboard sidewall(a) The sidewall that contains a whitewall,
bears white lettering, or bears manufactur-
er, brand, and/or model name molding that
is higher or deeper than the same molding
on the other sidewall of the tire, or
(b) The outward facing sidewall of an asym-
metrical tire that has a particular side that
must always face outward when mounted
on a vehicleLight truck (LT) tireA tire designated by its manufacturer as
primarily intended for use on lightweight
trucks or multipurpose passenger vehiclesLoad ratingThe maximum load that a tire is rated to
carry for a given inflation pressureMaximum load ratingThe load rating for a tire at the maximum
permissible inflation pressure for that tireMaximum permissible inflation pressureThe maximum cold inflation pressure to which a tire may be inflatedMeasuring rimThe rim on which a tire is fitted for physical
dimension requirementsOpen spliceAny parting at any junction of tread, side-
wall, or innerliner that extends to cord ma-
terialOuter diameterThe overall diameter of an inflated new tireOverall widthThe linear distance between the exteriors
of the sidewalls of an inflated tire, including
elevations due to labeling, decorations, or
protective bands or ribsPassenger car tireA tire intended for use on passenger
cars, multipurpose passenger vehicles, and
trucks, that have a gross vehicle weight rat-
ing (GVWR) of 10,000 lb. or less.PlyA layer of rubber-coated parallel cordsPly separationA parting of rubber compound between adjacent plies10-1.Specifications
696

Tire related termMeaningPneumatic tireA mechanical device made of rubber,
chemicals, fabric and steel or other materi-
als, that, when mounted on an automotive
wheel, provides the traction and contains
the gas or fluid that sustains the loadRadial ply tireA pneumatic tire in which the ply cords that
extend to the beads are laid at substantially 90 degrees to the centerline of the treadReinforced tireA tire designed to operate at higher loads
and at higher inflation pressures than the
corresponding standard tireSection widthThe linear distance between the exteriors
of the sidewalls of an inflated tire, excluding
elevations due to labeling, decoration, or
protective bandsSidewallThat portion of a tire between the tread and
bead Sidewall separationThe parting of the rubber compound from
the cord material in the sidewallSnow tireA tire that attains a traction index equal
to or greater than 110, compared to the
ASTM E-1136 Standard Reference Test Tire,
when using the snow traction test as descri-
bed in ASTM F-1805-00, Standard Test
Method for Single Wheel Driving Traction
in a Straight Line on Snow-and Ice-Cov- ered Surfaces, and which is marked with
an Alpine Symbol (
) on at least one
sidewall
Test rimThe rim on which a tire is fitted for testing,
and may be any rim listed as appropriate for use with that tireTreadThat portion of a tire that comes into con-
tact with the roadTread ribA tread section running circumferentially
around a tire10-1.Specifications
69710
Vehicle specifications

Tire related termMeaningTread separationPulling away of the tread from the tire car-
cassTreadwear indicators (TWI)The projections within the principal grooves designed to give a visual indication of the
degrees of wear of the treadWheel-holding fixtureThe fixture used to hold the wheel and tire
assembly securely during testing
(1) Table 1