its called going big.they are shit rims , the braking surface is crap and they are made from crap material. and i have no proof of a video as it was deleted,but i wish i did to prove to you how shit they are. almost as shit as echo 06. i run 30 psi in my rear tyre and a DH maxxis tube. try all rims are cheap and overpriced.end of.the kids gotta echo now so well done to him it was a koxx rim and a 8 foot drop to curb with dh tyre and 30 psi. and it was ages ago. i cant stand them.i did that same gap with my full fat and it stoood up to it a treat.