There is no structural change from having the sunroof or not, so once again, who would have thought a car salesman would tell lies?!
If anything, the double curved nature of the fixed glass panel would ADD torsional rigidity, except for the glue which would hold it on. a 5mm panel of glass is a helluva lot stronger and stiffer and a piece of 0.6mm sheet steel, the difference is the bonding method, steel is spot welded, glass is glued.
All the glas does is cover the gap in the roof otherwise vacated by the sheet metal.
Bookmarks