AmD are happy to advise on the best performance suspension setup for your car, and for you as an individual driver. Just email, phone or fax us.
Over steer and under steer are two often misunderstood
concepts related to the way a car handles. The following
explanations and diagrams should clear up any confusion you
steer is when the rear wheels are carving a larger arc than
the front wheels or the intended line of the turn. Rear
"slip angles" exceed those of the front tires. This is often
described as a "loose" condition, as the car feels like it
may swap ends, or be "twitchy."
This condition can be caused by "power over steer", where
you need to reduce power in order to bring the back end back
steer is when the front wheels are carving a larger arc than
the rear wheels. This is often described as "push" or
"pushing" - as the front end feels like it is plowing off of
Further acceleration only compounds the push, as weight
shifts back to the rear drive wheels off of the front
turning wheels, leading to a further lessening of the car's
ability to turn in.
Under steer can be remedied by slight modulation in throttle
to transfer weight forward to the front wheels, aiding their
traction and ability to carve the turn.
Many cars are designed to have a tendency to under steer. If
the driver gets uncomfortable and "lifts" off the gas, that
will cause the front end to tighten the curve - a relatively
safer, and more predictable condition.
When the car's body leans in a corner, the outside
suspension compresses and the inside suspension extends. In
other words, the outside suspension moves in bump direction
and the inside suspension moves in rebound direction
If the car rolls on the rear outside suspension during
corner exit, increase rebound damping force at the front
inside. The front inside suspension affects the car mostly
on corner exit. By adding rebound damping you will loosen
the car up on corner exit.
If the car rolls on the front outside during corner entry,
increase rebound damping on the rear inside suspension.
By adding rebound damping to the front on both sides
equally, it will tighten the car some.
By adding rebound damping to the rear on both sides equally,
it will loosen the car up some.
Note that the shock absorbers do not change the amount of
weight transfer, only the time it takes to transfer this
Only adjust enough rebound into each shock absorber to
eliminate the undesirable characteristic. Adjusting too much
rebound may mask a handling problem of another sort and may
even be make things worse and dangerous.
Suspension packages are also available by mail order within the U.K only. Unfortunately weight makes overseas postings cost-prohibitive.
Our fitting service includes accurate suspension geometry setting on our Beissparth aligner, if you are buying the very best quality suspension components you are wasting your money if you don't have the geometry right! Changing the suspension on your car is the most important change ever, it will affect how you feel about your car from that moment on, on a daily basis. We aim to help you make the right decision.
For more details on 4 wheel alignment please see out Technical area...