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 ...

After more than 130,000 miles of use, it is time to find out what is happening inside this BMW M4's S55 engine. We take a closer look at internal engine components while carrying out an Evolve billet ...

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 ...

When the F80 M3 arrived for the 2015 US model year, there was a lot of bickering in the BMW enthusiast community. The company's most loyal performance sedan buyers had been used to the M3's ...

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 ...