Chevrolet 2007 TrailBlazer Spezifikationen PDF herunterladen (Seite 449)

(E) Rim Diameter: Diameter of the wheel in

inches.

(F) Service Description: The service description

indicates the load range and speed rating of a tire.

The load index can range from 1 to 279. Speed

ratings range from A to Z.

Tire Terminology and Deﬁnitions

Air Pressure: The amount of air inside the tire

pressing outward on each square inch of the

tire. Air pressure is expressed in pounds

per square inch (psi) or kilopascal (kPa).

Accessory Weight: This means the combined

weight of optional accessories. Some examples

of optional accessories are, automatic

transmission/transaxle, power steering, power

brakes, power windows, power seats, and

air conditioning.

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.

Cold Tire Pressure: The amount of air pressure

in a tire, measured in pounds per square inch

(psi) or kilopascals (kPa) before a tire has built up

heat from driving. See Inﬂation - Tire Pressure

on page 452.

Curb Weight: This means the weight of a motor

vehicle with standard and optional equipment

including the maximum capacity of fuel, oil, and

coolant, but without passengers and cargo.

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