Unfortunately, all of the above is technically incorrect. There are common misconceptions that lead people to believe the issue isn’t universal to all E46’s such as convertibles having thicker floors, some models having additional or differently designed structures or that it only occurs in the earlier manufactured models not the later face-lift models.
![e46 m3 subframe crack symptoms e46 m3 subframe crack symptoms](https://walkersautotech.co.uk/wp-content/uploads/2020/10/subFrame.jpg)
During this article we may change back and forth between RACP & subframe so sorry in advance if it causes some confusion. The common use term of ‘subframe cracks/failure’ is technically incorrect as it is not the subframe that cracks but rather the section of the chassis the rear subframe mounts to known as the Rear Axle Carrier Panel (RACP) although, the most frequent early sign of failure within the structure occurs at the subframe mounts themselves hence the terminology. No matter the shape, model or way it is driven, subframe cracks are inevitable.
![e46 m3 subframe crack symptoms e46 m3 subframe crack symptoms](http://speed.academy/wp-content/uploads/2017/08/BMW-E46-Subframe-Repair-24.jpg)
How the car is inspected and the safety precautions taken is at the discretion of the individual.ĭespite the beliefs of some, all E46 3-series BMW’s are prone to cracking at and around the rear subframe mounts. Be advised, CMP Auto Engineering is not liable for any damage to property or harm to yourself or others that occurs while inspecting your car. This article is intended to help those new to the E46 3-series chassis or not overly familiar with the rear subframe mount cracking issue.