Originally Posted by
GraphiteGhost
Maybe, just maybe, they are there for flexibility? People have to bend/flex some and this seems like a novel way to accomplish this flexing. I don't quite know why they would use a porous material though. Has anyone asked the manufacturer?
But... they don't flex.
The tubes have flexible sections built into them, the "ring of screens" is rigid and doesn't budge. No, I haven't emailed Daimler-Benz corporate and asked them, but the effect on performance (positive or negative) is so marginal that I never invested the effort.