UUC Motorworks sells a bushing that eliminates the squeak. It may be teflon, but I'm not sure. I had the same problem every summer when it warmed up, getting worse with the heat, and it solved it for me. I think it was about $25. -- to be removed from bmw, see /bin/digest-subs.cgi or email "unsubscribe bmw" to majordomo@domain.elided