Claying the car
I have read many posts about using clay and decided today to try the bar that has been sitting in the garage for a year. The only thing I can say is WOW what a difference. After claying and using Klasse the car looks wet all over. It took about an hour and a half to clay the car and then of course the wax, but it was well worth it. I can say that I am a convert.
NB8S 2006 Z4, 3.0i-gone but not forgotten. Replaced with a 2008 135i, Premium, Nav, M Sport Etc.