212 Vehicle care
Occupant distribution : Designated
seating positions.
Outward facing sidewall : The side of
a asymmetrical tire that has a partic‐
ular side that faces outward when
mounted on a vehicle. The side of the
tire that contains a whitewall bears
white lettering or bears manufacturer,
brand and or model name molding on
the other sidewall of the tire.
Passenger (P-Metric) tire : A tire used
on passenger cars and some light
duty trucks and multipurpose vehi‐
cles.
Recommended inflation pressure :
Vehicle manufacturer's recommen‐
ded tire inflation pressure shown on
the tire placard.
Radial ply tire : A pneumatic tire in
which the ply cords that extend to the
beads are laid at substantially 90 de‐
grees to the centerline of the tread.
Rim : A metal support for a tire or a tire
and tube assembly upon which the
tire beads are seated.
Sidewall : The portion of a tire be‐
tween the tread and the bead.
Speed rating : An alphanumeric code
assigned to a tire indicating the max‐
imum speed at which a tire can oper‐
ate.
Traction : The friction between the tire
and the road surface. The amount of
grip provided.
Treadwear indicators : Narrow bands,
sometimes called "wear bars", that
show across the tread of a tire when
only 2/32 inch of tread remains.
Tread width : The width of the tire's
tread.
UTQGS : Uniform Tire Quality Grade
Standards, a tire information system
that provides consumers with ratings
for a tire's traction, temperature and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The rating are
molded into the sidewall of the tire.
Vehicle capacity weight : Is the num‐
ber of designated seating positions
multiplied by 150 pounds plus the
rated cargo load.
Vehicle maximum load on the tire :
Load on an individual tire due to curb
weight, accessory weight, occupant
weight and cargo weight.
Vehicle placard : A label permanently
attached to a vehicle showing original
equipment tire size and the recom‐
mended cold inflation pressure.
Steps for determining correct
load limit
1. Locate the statement "The com‐
bined weight of occupants and
cargo should never exceed XXX
pounds" on your vehicle's placard.
2. Determine the combined weight
of the driver and passengers that
will be riding in your vehicle.
3. Subtract the combined weight of
the driver and passengers from
XXX kilograms or XXX pounds.
4. The resulting figure equals the
available amount of cargo and
luggage load capacity. For exam‐
ple, if the "XXX" amount equals
1400 lbs. and there will be five
To Next Page
Loading...
