Lutz ,
It was a meant as a serious comment, but I probably didn't explain myself well. I seen a lot of damage to Vauxhall, Renaults, Peugeots, Fiats, Fords, even Jeeps caused by both raised and submerged road surfaces.
As said above I've experienced it myself but not in a Galaxy or it'd derivatives. I guess as you've may have seen the spring first hand and I think you more qualified in this area, I'll take you word for it (I only studied Motor vehicle Engineering to HNC level but have continue with CPD) However one of my colleagues is a former buyer for Alcoa's wheel division and a previous general manager of an AWI plant in the UK which produce 35,000 alloy wheels a week (before they up sticks and move production to south Africa) and he reckons most suspension damaged is cause by long term issues with alloys that have bottomed out. Which is very similar in effect to train wheels when they get chipped and they have been known to break wheels and/or axles as well
Kindest Regards #
MH