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Message: <blockquote data-quote="The Necessary" data-source="post: 67450" data-attributes="member: 302">Sure, if all you do is apply the foam to your A/B/C pillars and central chassis. However, I seem to be reading posts advocating the use of foam in the front and rear chassis sub-sections, which in (more modern cars) is where the crumple zones are.Sure, the foam is breakable, and it's not as hard as steel. But the same principal that makes it so effective in making the car "stiffer", ie. the spread of incidental force on the chassis across a greater area, is also the same principal that will cause the collasible sections to deform in a way not intended by the designers/engineers. Of course, how that impacts on the passenger "safety cell" is open to debate, but, when it comes to the lives and safety of you and your loved ones, should there even be cause for a debate?</blockquote>