The S55 engine powers some of BMW's most iconic modern M cars, but one weakness has become well known among enthusiasts: ...

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 ...

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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 ...

Nelson Ireson September 26, 2013 Comment Now! The move from the soaring, singing S65 V-8 of the E9x BMW M3 to the new twin-turbo, in-line six-cylinder S55 in the 2014 BMW M3 Sedan and M4 Coupe has ...

It’s time to face the music: the naturally aspirated engines are forever gone from BMW’s line-up. Unfortunately, it’s also the case with its Motorsport division, or M for short. M engines will, from ...

Stuffing the S55 engine that powers the BMW M3/M4 into the smaller M2 has been done before, but Lightweight Performance’s creation could be the coolest one yet. And that’s for a good reason, as after ...

BMW did release a next-gen X3 teaser video a couple of weeks ago, but it left the best bits out. We're talking about a brand new engine which will make its debut under the letter M. The switch to ...

The big news with the new BMW M2 Competition is its engine. The just-announced version of the smallest M car ditches the regular M2's engine in favor of a detuned version of the M3/M4 motor, and while ...

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 ...