I'm sure someones got some pics, but for the meantime here is a pic of some 16inch superlights (looks a bit like wats) on a 2+2 compared to 17in rotas. I agree about the 16inch thing being too small on a 2+2 as you can see by the pics. They don't look bad, it's just that I think the 17's look better.
Note that the wheel is actually on the back of the car, the front wheel has just been copied in photoshop. The suspension is also at stock height in the superlite pic however it has been lowered in the rota pic with photoshop.