Welcome to the forum! I have been meaning to create a post to ask the same question. I have never owned a matte color car before and to be honest, I have never really taken care of the exteriror of my previous non matte paint cars. So I have little knowledge about how to best keep a car clean. hahaI’m interested in hearing from owners that have experience with BMW’s frozen finishes (or other matte paint finishes I suppose). I’ve read no auto car washes and no wax, but practically speaking for a daily driver, how difficult is it to keep the frozen colors looking good?
I love the Frozen Portimao Blue but will be keeping the car primarily outside as my wife parks in the garage and the other half of the garage is a home gym. I’m in Southern California so very little rain, but plenty of dust and bird poop to go around! If the metallic Portimao is dramatically easier, I’ll probably go that way.
I really like the Frozen portimao blue and decided it was the color for me when I visited my local dealer and viewed their “color wall”. Because of how amazing the color is, this time around, I want to make sure the I keep the car clean and spectacular.
As for your question, so far youtube has given me some leads.
This video talks about how to wash a car with specific soap for matte paint.
This one talks about a product to help “protect” the paint.
I am no expert here so I can’t vouch for the products used in the videos.
The last thing I have read about to help protect your paint is a paint protection film. There are so many out there that I do not know which would work best for matte paint. You also you run the risk of the film giving your matte paint a glossy look.
Hope some of this helps. I too am very interested in hearing other suggestions.