16 Vs 17

[ricola]

The centre of gravity thing is false. Rolling radius is what will lower it, not wheel diameter. In fact I think increasing wheel diameter while maintaining rolling radius will actually lower the centre of gravity in most saloon cars.
It's a good idea to keep a stock rolling radius, if for no other reason than to keep your speedo reading correct...

[super vw]

With a smaller wheel you can fit smaller tires= smaller rolling radius.
That's what I was trying to say.