Air cabin filter micron rating?

06-09-2020, 09:36 PM	#1
kirr89 Private 29 Rep 75 Posts Drives: 2019 BMW 330i Join Date: Dec 2019 Location: Georgia iTrader: (0)	Air cabin filter micron rating? Featured on BIMMERPOST.com Just a random question but does anyone know what the standard air cabin filter rating is on BMW filters? I read an article the Toyota's only filter 30% whereas BMW and Merc's filter 80%. I don't remember what the percentage it was out of. Meaning I don't remember (80% of what). I guess just what they used and the quantity in their tests. But usually I know air filters in the home have some ratings like 2.5 microns or whatever for allergens. Just curious to know if anyone knows about BMW
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