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The first time I heard it, it sounded like I ran over something and it hit the underbody.I've been trying to figure out if this was a noise on the car or road debris for a couple of weeks now (since the weather cooled off somewhat), this thread convinces me that it is not debris. Heard it today in slow traffic on the freeway, wasn't particularly cold (low 50's) hadn't dropped a lot of altitude. Guess I have to decide if it's worth the service call for what may or may not resolve the issue (based on others experience)
It seems to come from different parts. The loudest is when it sounds like it comes from directly under the driver's footwell. It's loud and you can feel it with your feet...Mine does it, too, not frequently. Certainly startling when it happens.
My M3 does this occasionally in cold weather when turning into driveways at an angle. Sounds like a big oil can popping. I figured it comes from torque on the battery pack...
SameThe first time I heard it, it sounded like I ran over something and it hit the underbody.
Just say it's the battery elves shovelling more fuel into the furnace.My June 1st, 2019 SR+ has a bad case of this, I am waiting for the parts to come in, hopefully soon. I find this fault quite unsettling, quality on cars is often a matter of illusion, BMWs have poor quality and reliability, but the doors shut with solid sound so people still buy them. The oil-canning noises breaks the illusion for me, my car just sounds cheap and I cringe when my passengers ask why my car in making all this noise. I hope the new breathers will work to at least to improve matters.
You should bang on the rear floorboard if you want another illusion breaker on M3 build quality. Sounds like a tin can.My June 1st, 2019 SR+ has a bad case of this, I am waiting for the parts to come in, hopefully soon. I find this fault quite unsettling, quality on cars is often a matter of illusion, BMWs have poor quality and reliability, but the doors shut with solid sound so people still buy them. The oil-canning noises breaks the illusion for me, my car just sounds cheap and I cringe when my passengers ask why my car in making all this noise. I hope the new breathers will work to at least to improve matters.
You should bang on the rear floorboard if you want another illusion breaker on M3 build quality. Sounds like a tin can.