neumaticbump4
New member
In my G29 sDrive 30 there's a quiet metallic grinding noise coming from the rear end, I think from the middle of the car. The noise changes with road speed, and is only audible with the roof up.
I bought the car in March, at which time it was 3 years old with 27k miles. Now has 31k.
It's been in to BMW once before and they found that the diff oil was low, and topped it up. They advised to drive 500 miles and then check if the noise was still apparent, which it is. They said there were no metal shavings found in the oil that was removed from the diff.
Has anyone encountered something like this before? I'm thinking it might be a bearing on/in the diff that's on the way out.
Im arranging to get the car back in with them to investigate further, so any insights from folks would be most welcome.
I bought the car in March, at which time it was 3 years old with 27k miles. Now has 31k.
It's been in to BMW once before and they found that the diff oil was low, and topped it up. They advised to drive 500 miles and then check if the noise was still apparent, which it is. They said there were no metal shavings found in the oil that was removed from the diff.
Has anyone encountered something like this before? I'm thinking it might be a bearing on/in the diff that's on the way out.
Im arranging to get the car back in with them to investigate further, so any insights from folks would be most welcome.
