BMW's inline-six engines are loved among fans and have been around since the company's start, but only a select few can take the mantle as the most powerful.

For as much success as BMW has seen as a German auto manufacturer or otherwise, not every vehicle has been a massive hit with its audience.

6-cylinder engines are solid, tuneable, and sound sweet - they can also produce astonishing power outputs - like this monster ...

With three tricky-to-tune downdraught Solex carburettors, this BMW is easy to flood and can be a reluctant ... to a balanced and stiff tubular chassis fitted with independent front suspension that ...