what is the webbing material[and thread] for [car and or load] tie downs made from, and what is the DOT expiration[if any] ? i'm not talking cheap, offshore harbor freight stuff. these see more abusive use than any seat belt ever will. i know most of the belt material is stiffer than seat belt webbing, but what about the thread used ? if thread degradation is the main issue, and the thread used on tie downs is superior, couldn't this be a good argument to extend the replacement cycle ?
