Heartland 2014 Bighorn, Owner'S Manual

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41 Home is where your heart is...
Accessory Weight – The combined weight (in excess 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).
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 – This is the 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 alternate angles substantially
less than 90 degrees to the centerline of the tread.
Carcass – The tire structure, except treat and sidewall
rubber which, when inflated, bears the load.
Chunking – The breaking away of pieces of the tread or
sidewall.
Cold Inflation Pressure – The pressure in the tire before
you drive.
Cord – The strands forming the plies in the tire.
Cord Separation – The parting of the cords from adjacent
rubber compounds.
Cracking – Any parting within the tread, sidewall, or inner
liner of the tire extending to cord material.
CT – A 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 tire.
Curb Weigh t – The weight of a motor vehicle with standard
equipment including the maximum capacity of fuel, oil, and
coolant, and, if so equipped, air conditioning and additional
weigh optional engine.
Extra Load Tire - A tire designed to operate at higher loads
and at higher inflation pressures than the corresponding
standard tire.
Groove – The space between two adjacent tread ribs.
Gross Vehicle Weight Rating (GVWR) – The maximum
permissible weight of this fully loaded RV.
Gross Axle Weight Rating (GAWR) – The value specified
as the load carrying capacity of a single axle system, as
measure at the tire-ground interfaces.
Hitch Weight – The vertical trailer load supported by the
hitch ball.
Innerliner – The layer(s) forming the inside surface of a
tubeless tire that contains the inflating medium within the
tire.
Innerliner Deparation – The parting of the inner line from
cord material in the carcass.
Intended Outboard Sidewall – The sidewall that contains
a whitewall, bears white lettering or bears manufacturer,
brand, and/or model name molding that is higher or deeper
than the same molding on the other sidewall of the tire or
the outward facing sidewall of an asymmetrical tire than
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
multipurpose passenger vehicles.
Load Rating – The maximum load that a tire is rated to
carry for a given inflation pressure.
Maximum Permissible Inflation Pressure – The maximum
cold inflation pressure to which a tire may be inflated.
Maximum Loaded Vehicle Weight – The sum of curb
weight, accessory weight, vehicle capacity weight, and
production options weight.
Measuring Rim – The rim on which a tire is fitted for
physical dimension requirements.
Non-Pneumatic Rim – A mechanical device which, when a
non-pneumatic tire assembly incorporates a wheel, supports
the tire, and attaches, either integrally or separably, to the
wheel center member and upon which the tire is attached.
Non-pneumatic Spare Tire Assembly – A non-pneumatic
tire assembly intended for temporary use in place of one of
the pneumatic tires and rims that are fitted to a passenger
car in compliance with the requirements of this standard.
Non-Pneumatic Tire
– A mechanical device which
transmits, either directly or through a wheel or wheel
center member, the vertical load and tractive forces from
the roadway to the vehicle, generates the tractive forces
that provide the directional control of the vehicle and does
not rely on the containment of any gas or fluid for providing
those functions.
GLOSSARY OF TIRE TERMINOLOGY