Got 2 problems. Plan on bringing it into BMW SF (still have about 12 months left on original warranty). Before i do, i am looking to this community for a bit more insight before bringing it in.
Purchased October 31, 2019. Soft knocking sound seems to occur during hard acceleration during a left hand turn. It occurred about once every few weeks. It stopped for a couple of months after i installed new springs & wheel spacers. Just came back. My dashcam is able to record interior sound. When i hear the sound while driving, it is a soft knock... a muffled knock that sounds like it is coming from below the passenger side door. Prior to the spring/spacer install, i would (remember) a knock-knock. The recent event was a single knock. I captured the video (with audio) from the dashcam. However, when i listen to the sound on my computer, the knock is much louder than i remember. I am guessing that the dashcam that is securely mounted on the passenger side of the windshield is receiving both audible sound and the direct vibration through the car body/frame/suspension.
Saw this post ---> https://mybmwi3.com/forum/viewtopic.php?f=11&t=4711
Did not seem to fit because my noises are intermittent and i am not able to reproduce my sound on demand (e.g. accelerating in a curve; or flooring it on a freeway on ramp).
On Monday, i took off at 10am for some errands. Temperatures were in the upper 50's. I noticed that turning was more labored for me. It was stiffer and heavy....as if no power assist. There was no self-steering or pulling whether i was on the freeway (60-65) or on the streets (20-40mph). After a 20 minute drive i parked for an hour. When i returned....no issues.
Will be scheduling visit for the next week.
Any thoughts of what i can look for or suggest the mechanic look for?