The Black Dakota Leather on my 2007 335i convertible was treated with sun reflective technology from the factory. It was very effective.
AFAIK the F83 interior also has it.
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Drivers Club at Lime Rock - International Motorsports Research Center - Society of Automotive Historians - Madison Avenue Sports Car Driving and Chowder Society (0nly a VP) - BMWCCA - Porsche Club of America - M Gruppe - Polish Race Drivers of America (PDRA) - Glen Club (Watkins Glen International) - Jaguar Club of Southern New England
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