of control or the inability to stop the trailer, which could lead to
serious injury or death.
See the information provided in this section of the manual about
the breakaway cable. The breakaway cable should NEVER be used as
a substitute for braking or as a parking brake.
Note that if the breakaway cable has been
engaged—even slightly, as can happen
when the trailer is disengaged from the
tow vehicle and the cable is tripped over—it can cause the cable
clip to break. If the cable clip is missing, or it has been broken, first
check and attempt to release the emergency brake mechanism by
pressing up on the brake release tab under the actuator nose, right
behind the tow ball insert location. Press up on the brake release
tab, and if a metallic clunk or sound of spring releasing is heard,
that means the emergency brake mechanism had previously been
engaged. When pressing up on the brake release tab, if it moves
up and down freely with just the resistance of its spring, then the
ST
: The ST indicates that the tire is for trailer use.
Next
number
: This three-digit number gives the width in
millimeters of the tire from sidewall edge to sidewall edge. In
general, the larger the number, the wider the tire.
Next
number
: This two-digit number, known as the aspect ratio,
gives the tire’s ratio of height to width. Numbers of 70 or lower
indicate a short sidewall for improved steering response and better
overall handling on dry payment.
R
: The R stands for radial. Radial ply construction of tires has
been the industry standard for the past 20 years.
Next
number
: This two-digit number is the wheel or rim diameter
in inches. If you change your wheel size, you will have to purchase
new tires to match the new wheel diameter.
Tire Safety Tips
Preventing tire damage:
• Slow down when crossing over a pothole or other object in the
road.
• Do not run over curbs or other foreign objects in the roadway and
try not to strike the curb when parking.
Tire Safety Checklist
• Check tire pressure regularly (at least once a month or every 50
miles, whichever comes first), including the spare tire.
• Inspect tires for uneven wear patterns on the tread, cracks,
foreign objects or other signs of wear or trauma.
• Remove bits of glass and other foreign objects wedged in the
tread.
• Make sure your tire valves have valve caps.
• Check tire pressure before going on a long trip.
• Do not overload your vehicle. Check the tire information placard
for the maximum recommended load for the vehicle.
• When towing the trailer, remember that some of the weight of the
loaded trailer is transferred to the towing vehicle.
• For more information, visit www.nhtsa.gov or call (888) 327-
4326.
Uniform Tire Quality Grading System (UTQGS)
To help consumers compare tread wear rate, traction
performance and temperature resistance, the federal government
requires tire manufacturers to grade tires in these three areas.
This grading system, known as the Uniform Tire Quality Grading
System, provides guidelines for making relative comparisons when
purchasing new tires. You also can use this information to inquire
about the quality of tires placed on new vehicles.
Although this rating system is very helpful when buying new tires,
it is not a safety rating or guarantee of how well a tire will perform
or how long it will last. Other factors such as personal driving style,
type of car, quality of the roads, and tire maintenance habits have a
significant influence on your tire’s performance and longevity.
Tread wear grades are an indication of a tire’s relative wear rate.
The higher the tread wear number is, the longer it should take for
the tread to wear down. For example, a tire grade of 400 should wear
twice as long as a tire grade of 200.
Traction grades are an indication of a tire’s ability to stop on wet
pavement. A higher graded tire should allow you to stop on wet
roads in a shorter distance than a tire with a lower grade. Traction is
graded from the highest to lowest as AA, A, B, or C.
Temperature grades are an indication of a tire’s resistance
to heat. Sustained high temperature (for example, driving long
distances in hot weather), can cause a tire to deteriorate, leading
to blowouts and tread separation. From highest to lowest, a tire’s
resistance to heat is graded as A, B, or C.
Tire Fundamentals
Federal law requires tire manufacturers to place standardized
information on the sidewall of all tires. This information identifies
and describes the fundamental characteristics of the tire and also
provides a tire identification number for safety standard certification
and in case of a recall.
Information on Trailer Tires
Please refer to the following photo:
122—Trailers
Brakes
Most Malibu trailer brakes are “surge” brakes, which can be
effective and helpful particularly when towing heavy loads. (NOTE:
Not every jurisdiction allows surge brakes. Check with authorities in
the area in which you will be towing.) Trailers may be equipped with
optional electric brakes instead. Information follows regarding that
type of braking system.
When the tow vehicle slows
or stops, the trailer’s momentum
moves against the hitch ball and
causes hydraulic pressure in
the master cylinder (located in
the trailer’s tongue) to transfer
pressure through the brake lines,
causing the brakes to engage.
The trailer brakes should always
be maintained in top condition. This
includes regularly checking the
fluid level in the actuator. The loss
of brake function can result in loss
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