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"Why It's Good"

  Chassis Rigidity

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.

Consider 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 than today, sports cars 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.

Another 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.