Here at Fastlane, we take pride in stating that we
align any kind of vehicle with perfection.
We specialize from the normal
everyday car to the exotic. We understand that it is the little things that
make a perfect Wheel alignment. It all starts with the proper equipment &
know-how. A vehicle road test and inspection is very important to insure a job
done right. It is our duty to insure that your tires will get the maximum life
& that your vehicle handles the way it should. Whether it be your old VW
Bug, Honda, Jaguar, it must be perfect. Don't settle for less!
alignment technology advances continuously with the introduction of new makes
and models of vehicles. Two wheel alignment is quickly becoming obsolete and
four wheel alignment is rapidly being incorporated on many of the new models.
technology being incorporated in the newer vehicles, it's not just the front
tires which steer the vehicle. Some manufacturers now use four wheel steering
and complex electronic suspensions. Specific procedures must be followed to
ensure proper wheel alignment.
With today's computerized vehicle systems, improperly aligned wheels
can effect engine performance, ride, tire wear, steering and premature
Wheel alignment is the proper adjustment of ALL the
interrelated suspension angles. In alignment terminology, these adjustment
angles are called caster, camber, toe-in, steering axis inclination (SAI),
vehicle ride height and toe-out on turns.
: the inward or outward tilt of the wheel measured from top to bottom.
Camber is adjusted to prevent excessive tire wear and to enhance straight
ahead stability. It is measured in degrees and has several methods of
is the difference in the distance measured on any axle between the
leading edges and trailing edges of the wheel and tire assemblies at spindle
height. This is the most critical tire wearing angle. The angle formed by a
horizontal line through the plane of one wheel versus a centerline is called
the individual toe.
When a horizontal line is drawn through the plane of each wheel, and they
intersect in front of the wheels, this is called toe-in or positive (+0 toe.
When they intersect behind the wheels, this is called toe-out, or negative (-)
forward or rearward tilt of the steering knuckle pivot points, is also
called the steering axis. Caster is measured in degrees, from the steering axis
to vertical, as viewed from the side. It is computed in degrees by looking at
the camber change of each wheel through a specified steer. There are
three types of caster settings.
angle is when the top of the steering axis it tilted rearward. Negative caster
angle is when the top of the steering axis is tilted forward. Negative
can cause difficulty in returning out of a turn and wandering &
weaving at high speeds. If the vehicle has unequal caster, it can cause the
vehicle to pull from side to side. And zero degree caster
is when the
top of the steering axis is exactly vertical.
Front wheel set-back is the angle formed between the geometric
centerline and a line perpendicular to the front axle. It is measured in
degrees. Excessive set-back is normally created by frame or chassis errors.
These errors are brought about in most cases by front end collision and in some
cases by a manufacturing tolerance error. On cars designed with engine cradles,
the cradle placement will affect set-back. If the cradle isn't square with the
chassis, it must be straightened.
Set-back, if extreme, could bring about adverse
handling effects, along with incorrect alignment measurement if overlooked.
This may cause the vehicle to lead to the side where set-back exists; also a
pull during braking can occur. On FWD vehicles it can also cause increased
is the angle formed by the thrust line and the
geometric centerline. The geometric centerline is a line drawn between the
mid-point of the front axle and the mid-point of the rear axle.
toe is off on either of the rear wheels, it creates a thrust angle that causes
rear axle steer. The thrust line dictates the position of the front wheels when
driving straight ahead. It is therefore the most accurate reference when
measuring or adjusting the front wheels.
of the tires can help in diagnosing some wheel alignment failures. The tire
wear patterns associated with improper alignment include single shoulder wear,
cupping and feather edging.
Proper tire pressure is essential along with proper
wheel alignment for extended tire wear. The correct pressure not only allows
tires to perform at the standard for which they were designed, but is directly
related to ride height. Remember that cold tires will register a slightly lower
pressure than tires that are warm for usage. Tires with low pressure will wear
both outer edges. Over inflation will wear the center of the tires.
To ensure your car gives the best possible drive, the wheel alignment should be checked annually or every 12-15,000 miles.
Mis-alignment can make your car unsafe.