![2010 Mercedes E350 with a very strange noise, it sounds like a helicopter, but it's quiet and hard to hear. Noise most pronounced at 15 seconds in. Has anyone seen this before? : 2010 Mercedes E350 with a very strange noise, it sounds like a helicopter, but it's quiet and hard to hear. Noise most pronounced at 15 seconds in. Has anyone seen this before? :](https://external-preview.redd.it/2010-e350-with-a-very-strange-noise-it-sounds-like-a-v0-OWQ2ZnYxaXRuYmZiMYcL1S9coDe_fVGVWrPVxQD6UTrpSjKO5dVN0CBbqiE3.png?width=640&crop=smart&format=pjpg&auto=webp&s=5ea0021c738f8fc4a38a2833708201f202043ffa)
2010 Mercedes E350 with a very strange noise, it sounds like a helicopter, but it's quiet and hard to hear. Noise most pronounced at 15 seconds in. Has anyone seen this before? :
I have loud creaking and grinding sounds from all brakes (when applied) even though I replaced all brake pads, rotors, and sliding pins (suggested and done from two mechanics). Any idea of
![wheels - Uneven rotation sounds when my car gets to 50-60 MPH - Motor Vehicle Maintenance & Repair Stack Exchange wheels - Uneven rotation sounds when my car gets to 50-60 MPH - Motor Vehicle Maintenance & Repair Stack Exchange](https://i.stack.imgur.com/kJtxc.jpg)