rust is not an issue, unless your trucks sits for a while. When the rig is in motion the bbs are in motion, they are always rotating. Hence they polish each other, and yes they do wear out eventually.
It also sounds like a waterfall when you come to a stop, freaks some poeple out!!!
It also sounds like a waterfall when you come to a stop, freaks some poeple out!!!



... but it also sounds like the first few miles would really suck.