My 2011 Audi A4 has been sitting for about 2 months in a garage. Today I drove it and as I went faster than 15 MPH I noticed a bad grinding noise and vibrations; even when I'm not braking. If I move the wheel in any direction except almost completely straight, the grinding / vibrations get worse. Braking actually helps with the vibrations and noise. Note that my ability to brake isn't affected, I can still brake with the same force I'm used to. I turned around and examined my rotors: I'm no brake expert but these look bad. This one in particular is the worst, the others aren't as bad. I've read online that sometimes this rusting will come off after braking a bit due to the pads rubbing it off.
First, could these issues be caused by a rotor in this condition? If so, is this something I should wait out for this to happen, or should I stop driving / get these replaced?
I took the car out today and here are 2 videos which show the issue:
- Car at idle - No issues, car sounds perfect - https://www.youtube.com/watch?v=k2cFREtBqQ4&feature=youtu.be
- Driving - The sounds are kind of obvious, but it's more like a constant "woob woob woob" or "reeb reeb reeb" noise - https://www.youtube.com/watch?v=4RrrQc46f9A&feature=youtu.be (Skip to around 4:10 for a better view of my steering wheel and speedometer)
Sorry for the bad video and it being upside down at times, I was trying to concentrate on driving and give details, so I wasn't paying attention to my camera orientation.
These don't sound exactly like the sounds, but you get the idea. Watching these again and listening to it a little distorted, it almost sounds like a bearing issue; it seems similar to like when your fan's bearing is starting to go and it makes like a humming noise.