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      06-24-2019, 09:35 AM   #4
CLABRO's Avatar

Drives: BMW M Sport G30
Join Date: Apr 2017
Location: Tulsa, Oklahoma

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It almost sounds like the rotor is rubbing against something creating a lot of friction, but you'd most likely be able to feel that. Something similar happened on my Escalade and my front passenger rotor and rim had to be replaced.

However, It does almost sound like highly compressed air leaking out or something which is what I'd guess it is since you can't feel it or recreate it.

Either way, take it to the dealer and keep us posted.

G30 l Alpine White l M Sport Package l Executive Tier l Icon Adaptive Full LED Headlights l Mocha Nappa Leather l Multi-Contour Seats l Drivers Assistance Package l Drivers Assistance Plus Package l Dynamic Handling Package l Parking Assistance Package l Bowers & Wilkins Diamond Surround Sound System l M Sport Brakes l Apple Carplay