Rod bearing failures are often discussed within the BMW enthusiast community, but how much of a concern are they for the S55-powered F8X generation? This in-depth examination investigates a ...

The BMW M2 rebuild continues with a key engine fix aimed at improving reliability and overall performance. After addressing known issues with the S55 engine, this stage focuses on how the car feels ...

The BMW S55 engine has earned its fans, and it’s easy to see why. This twin-turbo 3.0-liter inline-six, found in the F80 M3 and F82 M4, is often called one of BMW M’s more reliable modern engines – if ...

This 2015 BMW M3 engine teardown shows what can happen when warning signs get ignored for far too long. The S55 engine is reliable with maintenance, but tuners push its limits. A teardown revealed ...