For those of you who have thought about putting a set of these on your vehicle, a bit of advice. I can't afford proper white walls but like the look. I can source sets of the 2 sizes described below quite easily for about A$80 odd.
I put a set of 2.5" (63mm) flappers on the car last year - looked good. Problem is that even at modest speeds (I would generally travel at 80-90kmh, rarely up to 100kmh on a freeway) they become damaged rather quickly. Have a look:
Close up shows the little splits that develop and eventually tear holes in the plastic - just too much "flapping":
I have now put a set of 1 3/4" (45mm) on and found that they sit much better and still look pretty good - I think a better proportion than the 2.5" ones. Time will tell over the summer and the driving I will be doing to see how they hold up. Here's how they look just fitted:
Here's the look with the bling put on: