its dangerous to drive a lowered car..
go get ultimate suspension set up you need to look at the cars center of gravity if you lower the car past the cars centre of gravity the performance of the cars suspension will actually be worse than standard..
oh and i got pulled over once and the cop said its because if you get a flat tyre anything under the the car will scrape on the road and flip the car.. (maybe if your tailshaft isnt on properly)
if you can only lower it 5 cm there isnt any point of lowering it at all coz it wont look any different..
Righto.....................
I don't think I've owned a car that wasn't lowered, and I don't consider any of them to be dangerous. In fact I believe it made them safer do to the fact it increased the mechanical grip. They were all lowered SENSIBLY, not dragging on the ground with ultra super duper low springs.
No lower than the center of gravity? Im having a little trouble with this. Wouldn't the COG also go down as the suspension height is lowered? Perhaps you mean 'polar moment of inertia'?
I would think that if your tailshaft wasn't on properly you may notice a mild vibration.
Remember 5cm=50mm=2inch I think it would look different. Not everyone lowers a car for looks alone, some have discovered that it will improve the cars handling.
My 2c.
J