I doubt they actually spin that fast based on the sound they make which is nearly none, certainly only audible if the car is off and lights are on...a small hum.
I've worked on plenty of equipment with ~40mm 6000+ rpm fans, they are LOUD, as in, screaming loud.
Just an FYI, even the MB factory LED lighting system has fans. My brother's E400 has cooling fans in the headlights, you can hear those too.
You seem slightly obsessed with bashing LED alternative bulbs. Did they take your lunch money or stuff you in a locker or something?
I've worked on plenty of equipment with ~40mm 6000+ rpm fans, they are LOUD, as in, screaming loud.
Just an FYI, even the MB factory LED lighting system has fans. My brother's E400 has cooling fans in the headlights, you can hear those too.
You seem slightly obsessed with bashing LED alternative bulbs. Did they take your lunch money or stuff you in a locker or something?