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In July, BMW already announced a recall for certain M2, M3 and M4 units due to issues with rear differentials. All replacements were performed free of charge to the owners. However, BMW has recently discovered that there may still be an issue with the units that had their differentials replaced. This time it is not about the differentials but the subframe bolts used.
Turns out that during the replacement process of the differentials, technicians may have reused the original subframe bolts instead of using new ones. Subframe bolts are typically not to be reused, to avoid any issues. To ensure that there are no risks, BMW is recalling these units to have the bolts replaced with new ones.
It is not a big deal to have the bolts reused as owners who DIY fixes on their cars often do this. However, BMW knows that it could result in the bolts loosening. At the very least, it can affect handling. In some cases, it may even lead to a crash. BMW knows that the risk is high, especially if it was their technicians that caused the issue.
The NHTSA says that only 72 cars were affected, including BMW M2, M3, M4 and M4 Convertible models. All concerned owners will be notified by their dealerships in the United States starting October 24.
