Which BMW Engines Have Rod Bearing Problems?
Photo by Ivan Kohut on Unsplash Rod bearing failure is one of those subjects that makes BMW owners nervous. You've probably read something about it, a forum thread, a YouTube teardown, a mechanic's warning, and now you're trying to work out whether it applies to your car or whether it's been exaggerated. The honest answer is: it depends entirely on which engine you have. Some BMW engines have a genuine, well-documented rod bearing problem that owners should take seriously. Others get mentioned in the same breath largely by association, and the reality is considerably less alarming. This guide covers both clearly. We'll explain what rod bearings are, which BMW engines are genuinely affected, why it happens, and what you can do about it, whether you're trying to prevent a problem or dealing with one that's already started. What Are Rod Bearings and Why Do They Matter? BMW rod bearings are thin, semi-circular shells that sit between the connecting rods and the...