I think my wheels would look better if the car was lowered, theres a big gap above the wheels that make the wheels look smaller.
Conscript, i can see what you mean about the brakes looking small, but I wouldn't have thought 16s would make all that much difference?. Then again i also have rear drums so these would look even worse with bigger alloys.
I think its also that first pic making them look a bit odd, the suns catching all the dirt etc and highlighting them. Plus Ive mirrored the image to make it at the same angle as the second pic for a better comparison shot. In the second picture they don't look too bad. In real life they look OK but like i said as soon as a car with bigger wheels parks near mine they immediately look really small.