Page 31 of 69
Overall width -
The linear distance between the exteriors of the sidewalls of an inflated tire, including
elevations due to labelling, decorations, or protective bands or ribs.
Pin Weight -
The vertical trailer load supported by the king pin of a fifth wheel hitch.
Ply -
A layer of rubber-coated parallel cords.
Ply separation -
A parting of rubber compound 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.
Production options weight -
The combined weight of those installed regular production options
weighing over 2.3 kilograms (5 lbs.) in excess of those standard items which they replace, not previously
considered in curb weight or accessory weight, including heavy duty brakes, ride levellers, roof rack,
heavy-duty battery, and special trim.
Radial ply tire -
A pneumatic tire in which the ply cords that extend to the beads are laid at substantially
90 degrees to the centerline of the tread.
Recommended inflation pressure -
This is the inflation pressure provided by the vehicle manufacturer
on the Tire Information label and on the Certification / VIN tag.
Reinforced tire -
A tire designed to operate at higher loads and at higher inflation pressures than the
corresponding standard tire.
Rim -
A metal support for a tire or a tire and tube assembly upon which the tire beads are seated.
Rim diameter -
This means the nominal diameter of the bead seat.
Rim size designation -
This means the rim diameter and width.
Rim type designation -
This means the industry of manufacturer’s designation for a rim by style or code.
Rim width -
This means the nominal distance between rim flanges.
Section width -
The linear distance between the exteriors of the sidewalls of an inflated tire, excluding
elevations due to labelling, 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.
Test rim -
The rim on which a tire is fitted for testing, and may be any rim listed as appropriate for use
with that tire.
Tread -
That portion of a tire that comes into contact with the road.
Tread rib -
A tread section running circumferentially around a tire.
Tread separation -
Pulling away of the tread from the tire carcass.
Tread wear indicators (TWI) -
The projections within the principal grooves designed to give a visual
indication of the degrees of wear of the tread.
Vehicle capacity weight -
The rated cargo and luggage load plus 68 kilograms (150 lbs.) times the
vehicle’s designated seating capacity.
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 the curb weight, accessory weight, and normal occupant weight (distributed in
accordance with Table I of CRF 49 571.110) and dividing by 2.
Weather side -
The surface area of the rim not covered by the inflated tire.
Wheel center member -
In the case of a non-pneumatic tire assembly incorporating a wheel, a
mechanical device which attaches, either integrally or separably, to the non-pneumatic rim and provides
the connection between the non-pneumatic rim and the vehicle; or, in the case of a non-pneumatic tire
assembly not incorporating a wheel, a mechanical device, which attaches, either integrally or separably, to
the non-pneumatic tires and provides the connection between tire and the vehicle.
Wheel-holding fixture -
The fixture used to hold the wheel and tire assembly securely during testing.
Summary of Contents for T2801
Page 2: ...BIGFOOT TRAILER MANUAL DRAFT 8 APRIL 3 2008 ...
Page 36: ...Page 34 of 69 ...
