You would be the first person to try it. I'm 99.999999999999999999999999999999999% sure that no one else has ever tried it.Now I hope I don't raise any new arguments with this(!) but I've already got THULE bars and feet etc from my old car so aren't keen on forking out for a completely new set to put on my ByDiesel 500 with glass roof.
Now I know they already do a THULE 500 shortened roof addition to put on a 500 but it specifically states it's not for glass roof versions.
So my question is:- has anyone tried it anyway? Is it likely to damage the car or is it just THULE not wanting people to put heavy loads on a glass roof..?
Give it a go, what's the worst that can happen?
Actually, to be perfectly honest I wouldn't do that, I'd just buy the roofbars that the OP bought because you know that they will work 100% and not damage the car. You've probably paid quite a bit of money for the 500, what's another £99?