Lucky, technically the height of my front springs is considered defectable and illegal
It really isn't that low, I'm happy with it but I think I could very safely go lower without endangering the car's performance etc.
Problem with a big event like that here (or even a tiny one) is that there would be a massive police presence and they'd be out to defect car left right and center. People know this and it just wouldn't be successful at all.
Here each car has a minimum height from the center of the wheel to the wheel arch which it can't exceed. And the minimum clearance for any part of the car must be at least 10cm, about 4 inches
And over an inch wider than the stock wheels is also defectable, gets used all the time as an insurance clause...