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"Why It's Good"
In reading tests of and articles about various cars in newspapers and magazines, you may have seen much attention paid to increased chassis rigidity in new vehicles. "The all-new 2016 Bloxfire GT is 75% more rigid than the 2015 model" is a typical sort of statement. "Whatever does that mean and is it important?," you may wonder.
It certainly is important. The chassis of a car (or truck, or any other sort of wheeled vehicle) is the most important structural part. The more rigid it is, the better chance that all of the wheels will point in the desired direction. This is a Good Thing for control, safety, and comfort. The addition of quality, proven, aftermarket accessories that enhance chassis rigidity are very beneficial in several ways.
control, primarily steering response and cornering ability. If the vehicle's
frame flexes too much, the wheels, and therefore the vehicle itself, will move
in directions other than the one which the driver intended. Not a Good Thing.
This movement doesn't have to be large to be noticeable. The need for constant
steering corrections while driving may be due to frame flex (among many other
possible causes.) This can be tiring at best (a definite safety factor), and can
make a car's cornering abilities less than optimum - another very negative
safety factor. In the "good old days" when automobile frames were less rigid
often had very stiff suspensions. This reduced unwanted wheel movement and
allowed the tires to be in contact with the ground in order to transmit
acceleration, braking or cornering forces. The more rigid the chassis the
quicker the steering response which enhances the driving experience every
moment you are at the wheel.
noticeable effect of flex is noise. As different parts of a vehicle move with
respect to each other, noise results. With time, things loosen and get even more
annoying noises. Squeaks and rattles are the most noticeable effects, but
constant flex or vibration can break things, too. Not good, for cosmetic,
comfort, or possibly (depending on what breaks) safety reasons. By improving
chassis rigidity the vehicle will continue to feel "tight" and "new" as the
miles pile up, that, in itself is reason
enough to acquire and install after market chassis bracing accessories.
"Anti sway bars" are not chassis
bracing components, they merely reduce body roll which is a good thing as well
assuming that the first consideration is improving
chassis rigidity so you have a solid chassis foundation on which to add improved suspension components.