I used to do it every week but now since its the rainy season fallhere, a few days of sunshine then several days of rain I got lazy. I was supposed to wash it today but then it rained and will be raining for several days so whats the point. I think this is the 2 weeks now she hasn't seen a sponge The crazy thing is Silverstone still looks shiny and silver with all this rain and lil rain spots on the car I feel for the berlina owners!!

 

Usually once every two weeks. Nothing gets dirtier than black cars. I had a black car, and when it got dirty, and it got dirty very often. 5 minutes after a wash and it'd get dirty.

 

sighs ..., houston weather blows hahaha ..., i try 2 wash it when i can usually every 2 weeks or so ..., stoned stooks hides the silly dirt welll

 

That's because dusts are grayish, and not very visible on silver but of course very visible on black.

 

I saw a white S the other day and it looked way dirty and dull to not shiny? maybe needs wax.

 

once every 2 weeks, use www.weather.com so you know when it's the best time to wash the car.

 

I wash mine when it needs to be washed. I don't have a set schedule like every week for instance. I've gone as little as 1 day (road trip) between washes and as much as a month and a half. (When the car sits because of inclement weather.)

 

I wash my S every week. I guess is because i hate having dust on my car.

 

Every Time i use it, I dont use it very often since is a Weekend Car

 

I usually wash mine immediately after washing it. OCD of course. With Berlina Black its never really clean.Once you use the detail spray from front to back its time to wash the front again.

Generally - once/week. More or less dependant on weather and usage.