Your Driving and the Road
Braking in Emergencies
Use your anti-lock braking system when
you need to. With anti-lock, you can
steer and brake at the same time. In
many emergencies, steering can help
you more than even the very best
braking.
130
You can steer around the obstacle while
braking hard.
As you brake, your computer keeps
receiving updates on wheel speed and
controls braking pressure accordingly.
Remember: Anti-lock doesn’t change
the time you need to get your foot up to
the brake pedal.
If you get too close to
the vehicle in front of you, you won’t
have time to apply your brakes
if that
vehicle suddenly slows or stops. Always
leave enough room up ahead to stop,
even though you have anti-lock brakes.
To Use Anti-Lock
Don’t pump the brakes. Just hold the
brake pedal down and let anti-lock
work for you.
You may feel the system
working, or you may notice some noise,
but this
is normal.
Steering
Power Steering
If you lose power steering assist
because the engine stops or the system
is not functioning, you can steer but it
will take much more effort.
Steering Tips
Driving on Curves
It’s important to take curves at a
reasonable speed.
A lot of the “driver lost control”
accidents mentioned on the news
happen on curves. Here’s why:
Experienced driver or beginner, each
of
us is subject to the same laws of physics
when driving on curves. The traction of
the tires against the road surface makes it
possible for the vehicle to change its
path when you turn the front wheels. If
there’s
no traction, inertia will keep the
vehicle going in the same direction. If
you’ve ever tried to steer a vehicle on
wet ice, you’ll understand this.
The traction you can get in a curve
depends on the condition of your tires
and the road surface, the angle at which
the curve is banked, and your speed.
While you’re in a curve, speed is the one
factor you can control.
Suppose you’re steering through a
sharp curve. Then you suddenly
accelerate. Both control systems
-
steering and acceleration - have to do
their work where the tires meet the
road. Adding the sudden acceleration
can demand too much of those places.
You can lose control.
What should you do
if this ever
happens? Ease
up on the accelerator
pedal, steer the vehicle the way you
want it to go, and slow down.
Speed limit signs near curves warn that
you should adjust your speed. Of
course, the posted speeds are based on
good weather and road conditions.
Service & Appearance Care
test course. For example, a tire graded
150 would wear one and a half (1 1/2)
times as well on the government course
as a tire graded
100. The relative
performance of tires depends upon the
actual conditions
of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices and differences
in road
characteristics and climate.
Traction - A, B, C
The traction grades, from highest to
lowest are:
A, B, and C. They represent
the tire’s ability to stop onwet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete.
A tire
marked
C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight-
ahead) traction tests and does not
include cornering (turning) traction.
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
conditions 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
corresponds 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 laboratory test wheel than the
minimum required by law.
Warning: 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 buildup
and possible tire failure.
These grades are molded
on the
sidewalls
of passenger car tires.
While the tires available as standard or
optional equipment on General Motors
vehicles may vary with respect to these
grades, all such tires meet General
Motors performance standards and have been
approved for use on General
Motors vehicles.
All passenger type (P
Metric) tires must conform to Federal
safety requirements in addition to these
grades.
Wheel Alignment and Tire
Balance
The wheels on your vehicle were
aligned and balanced carefully at the
factory to give you the longest tire life
and best overall performance.
In most cases, you will not need to have
your wheels aligned again. However,
if
you notice unusual tire wear or your
vehicle pulling one way or the other, the
alignment may need to be reset.
If you
notice your vehicle vibrating when
driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked
or badly rusted. If wheel nuts keep
coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If
the wheel leaks air, replace it (except
