This is why Europe want to enforce the no mods stuff, in Germany to fit a set of side bars, first they have to have a tuv cert, then you fit them, and have to get a conformity of fitting cert to say they have been installed as per required using correct nuts bolt washers etc etc... Which was why we have the sva test, due to self built kit car etc etc, and why I was banging on about
@Pauly led light kit.. And wheels etc etc... If you don't do things right, them in authority will put the German system into place..