Hyundai 2008 Elantra Manuel d'utilisateur télécharger pdf (Page 317)

741

Maintenance

Temperature -A, B & C

The temperature grades are A (the

highest), B and C representing the

tire’s resistance to the generation of

heat and its ability to dissipate heat

when tested under controlled condi-

tions on a specified indoor laboratory

test wheel.

Sustained high temperature can

cause the material of the tire to

degenerate and reduce tire life, and

excessive temperature can lead to

sudden tire failure. The grade C cor-

responds to a level of performance

which all passenger car tires must

meet under the Federal Motor

Vehicle Safety Standard No. 109.

Grades B and A represent higher

levels of performance on the labora-

tory test wheel than minimum

required by law.

Tire terminology and definitions

Air Pressure: The amount of air

inside the tire pressing outward on

the tire. Air pressure is expressed in

pounds per square inch (psi) or kilo-

pascal (kPa).

Accessory Weight: This means the

combined weight of optional acces-

sories. Some examples of optional

accessories are, automatic transmis-

sion, power seats, and air condition-

ing.

Aspect Ratio: The relationship of a

tire's height to its width.

Belt: A rubber coated layer of cords

that is located between the plies and

the tread. Cords may be made from

steel or other reinforcing materials.

Bead: The tire bead contains steel

wires wrapped by steel cords that

hold the tire onto the rim.

Bias Ply Tire: A pneumatic tire in

which the plies are laid at alternate

angles less than 90 degrees to the

centerline of the tread.

WARNING - Tire

temperature

The temperature grade for this

tire is established for a tire that

is properly inflated and not

overloaded. Excessive speed,

underinflation, or excessive

loading, either separately or in

combination, can cause heat

build-up and possible sudden

tire failure. This can cause loss

of vehicle control and serious

injury or death.

WARNING

The traction grade assigned to

this tire is based on straight-

ahead braking traction tests,

and does not include accelera-

tion, cornering, hydroplaning,

or peak traction characteristics.

WARNING

The temperature grade for this

tire is established for a tire that

is properly inflated and not

overloaded. Excessive loading,

either separately or in combina-

tion, can cause heat build-up

and possible tire failure.

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