Odd creaking noise from passenger side rear brakes...

Manlikefunk

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I'm not sure how to describe it but the frequency of the creak is directly proportional to the road speed, it's not constant and slows as the car slows under braking. It sounds like it's something on the caliper/ wheel/ brake rotor scraping or squeaking against something else on one of those parts with each revolution of the passenger side rear wheel.

It's hard to tell if it does it when the brakes are cold but it definitely does when they're hot. The main time I notice it is during a spirited drive with the windows down. More the kind of sound I'd associate with a creaking spring, but only happens under braking. As far as I can tell, it doesn't make the sound when braking in reverse.

Video link:


View: https://www.reddit.com/r/MechanicAdvice/comments/1czppfq/2012_audi_s3_manual_57k_mileage_rhythmic_speed/
 
Check heat shields as sounds like a tinny ally noise they make when loose, based on your video.