"The primary change here is the Hollow Bead Wall design. Industry Nine claims this has been specifically engineered to be stronger and more impact-resistant. While it sounds counterintuitive that a hollow structure would be stronger than a solid one, the general idea is that it works kinda like an I-beam, reducing weight while maintaining strength with less material. Not only does the hollow structure absorb impact, but the wider surface area is claimed to disperse load more effectively, thereby increasing strength."
"Industry Nine's Hollow Bead Wall design increases the bead wall width to 4mm, helping reduce the likelihood of pinch flats. Given that a wider bead is less "sharp" than a narrower one, it doesn't cut through the tire casing quite as easily in a pinch-flat scenario. Additionally, part of the added bead wall width is a small hook, which Industry Nine says " creates a better tubeless seal and tight lock on the tire bead for added security when the turns get extra wild."
Industry Nine introduced a Hollow Bead Wall design to its S-Series aluminum rims, applied to Trail-S V2 and Enduro-S V2 models, to boost strength and impact resistance while lowering pinch-flat risk. The hollow bead wall functions like an I-beam, reducing weight while maintaining structural integrity and dispersing load across a wider surface. The bead wall width was increased to 4mm and includes a small hook intended to improve tubeless sealing and bead retention. The Trail-S targets trail and all-mountain use with a 28.5mm internal width and 28 holes, while the Enduro-S uses a 30mm internal width and 32 holes.
Read at Bikerumor
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