Join Date: Apr 2002
Location: Dandridge (Near Knoxville), TN, USA
Re: Windshield Fogging?
The scratch resistant coating on the stock BMW windshield will absorb moisture from the air, and when the temperature etc. are right, fogging occurs. It will normally go away when the temperature of the shield rises, but unfortunately, any additional coating, such as Plexus, tends to seal the moisture in and the fogging will be far more persistent.
Alcohol is very hygroscopic, which means that it will "grab" moisture vigorously, so rubbing the shield down with alcohol will pull the moisture out of the coating.
Note: Do not expect plain rubbing alcohol from the drugstore to do it very well because it is often only a few percent alcohol, the rest water. Denatured alcohol, or isopropyl alcohol that is a high percentage of alcohol works well.
The key is to NOT put any type of sealing coating on it!
I don't want to achieve immortality through my work...I want to achieve it through not dying.
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.