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      06-08-2023, 07:18 PM   #39
chris719
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Drives: '08 M Roadster
Join Date: Oct 2007
Location: NJ

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Quote:
Originally Posted by Forzanerazzurri View Post
Thanks for the anecdote Ralph, good thing you put that microscopic layer of sealant on your car, that 2mils of UV inhibitors in BMW clear coat never stood a chance!
Yep. PPF helps, but waxes, sealants, and ceramic coatings provide relatively little UV protection. They provide more than zero, but not a ton. The average ceramic coating is around 2 microns thick or so. There's simply no way they can do much, especially against the longer wavelengths. If they were any good, the companies would be showing you data or coming up with a metric.
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