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Page 18 For technical questions, please call 1-800-444-3353. Item 90154
SAFETY OPERATION MAINTENANCEASSEMBLY
Tire information
Tire Terminology Glossary
• Accessory weight means- the combined weight
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.
• Carcass means- the tire structure except for the
tread which provides the major portion of the tire’s
capability to deflect in response to the vertical loads
and tractive forces that the tire transmits from the
roadway to the non-pneumatic rim, the wheel center
member, or the vehicle and which attaches to the
vehicle or attaches, either integrally or separably, to
the wheel center member or non-pneumatic rim.
• Carcass separation means- the pulling
away of the carcass from the non-pneumatic
rim or wheel center member.
• Chunking means- the breaking away
of pieces of the carcass or tread.
• Cracking means- any parting within the
carcass, tread, or any components that connect
the tire to the wheel center member.
• Curb weight means- 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 weight optional engine.
• Load rating means- the maximum
load a tire is rated to carry.
• Maximum loaded vehicle weight
means- the sum of:
a. Curb weight;
b. Accessory weight;
c. Vehicle capacity weight; and
d. Production options weight.
• Maximum tire width means- the greater of either
the linear distance between the exterior edges
of the carcass or the linear distance between
the exterior edges of the tread, both being
measured parallel to the rolling axis of the tire.
• Normal occupant weight means-
68 kilograms times the number of occupants.
• Occupant distribution means-
distribution of occupants in a vehicle.
• Production options weight means- the combined
weight of those installed regular production options
weighing over 2.3 kilograms in excess of those
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 trim.
• Tread means- that portion of the tire that
comes in contact with the road.
• Tread separation means- pulling away
of the tread from the carcass.
• Vehicle capacity weight means- the rated
cargo and luggage load plus 68 kilograms times
the vehicle’s designated seating capacity.
• Vehicle maximum load on the tire means- that
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 means- that
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 and dividing by 2.