funny story about hayes mechs. one of my buddies just bought a front one because he wanted to start doing sum trials stuff. when he first got it it was rubbing a bit. so he showed his dad and while he was pointing(the wheel was spinning) he looked away and then he got his finger caught in it. 6 stiches later he was back out bikin again. but ya after he got them to stop rubbing hes never had a problem with them. but i would still say buy an avid