Chevrolet Trax: Tire Designations
Tire Size
The following is an example of a typical passenger vehicle tire size.
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(1) Passenger (P-Metric) Tire: The United States version of a metric tire sizing system. The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association.
(2) Tire Width: The three-digit number indicates the tire section width in millimeters from sidewall to sidewall.
(3) Aspect Ratio: A two-digit number that indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60, as shown in item 3 of the illustration, it would mean that the tire's sidewall is 60 percent as high as it is wide.
(4) Construction Code: A letter code is used to indicate the type of ply construction in the tire.
The letter R means radial ply construction; the letter D means diagonal or bias ply construction; and the letter B means belted-bias ply construction.
(5) Rim Diameter: Diameter of the wheel in inches.
(6) Service Description: These characters represent the load index and speed rating of the tire. The load index represents the load carrying capacity a tire is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load.
READ NEXT:
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 kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight: The
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.
Caution
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can res
Tire Pressure Monitor System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your tires and
transmit tire pressure readings to a
SEE MORE:
Wheel drive shaft outer joint inspection
Disassembly Procedure
Remove the outer constant velocity (CV) joint and boot from the wheel
drive shaft. Refer to Front Wheel
Drive Shaft Outer Joint and Boot Replacement.
Remove any lubricant from the CV joint.
Fig. 64: Taping Gently On Brass Drift With A Hammer In Order To Tilt Cage
NOTE:
Compass
The vehicle may have a compass
display in the Driver Information
Center (DIC).
Setting the Compass Zone
Under certain circumstances, such
as during a long trip or moving to a
new area, the compass zone will
need to be reset. If the compass is
not set to the correct zone, it may
give false readings.
