Originally Posted by OzXFR

Yep, I learned that one many years ago. Even worse on a lowered F-Type so I am verrry careful when approaching those infernal bump stops and I try to not get close enough to touch it.
I know someone (in a Hyundai) who drove right up to one of those bump stops with no apparent problem but when she reversed back out she ripped off half of the front undertray. It turned out that one of the dynabolts holding the bump stop down had let go and was poking up a couple of cm above the concrete, easy to miss.
The repair cost several hundred $ and she sought recompense from the local council but no go, they escaped through some obscure legal/technical loophole.