Vijay Pattni24 August 2011

Watch the BMW M5 hit Laguna Seca

Video: upcoming super saloon laps legendary circuit, V8 gives a little roar…

Good news! The twin turbochargers on the new BMW M5 were designed with a high level of compressor and turbine efficiency and were developed to work with the 4.4-litre V8's unique cross-bank exhaust manifold.

More good news! This manifold optimises gas flow en route to aforementioned ‘chargers and features identical pipe lengths and a combustion chamber arrangement mirroring the firing sequence to ensure the gas flows through the ducts at an even rhythm.

Gallery: See pics of the new 555bhp V8 BMW M5

In fact, says BMW, the cross-bank exhaust manifold and twin turbo technology "play a key role in delivering a multilayered collage of sound": the exhaust pipe runs straight down the chassis with a large cross section, feeding out into the customary twin tailpipes.

Why the engineering lesson? Because BMW North America has just posted a video of the new M5 hot-tailing around the famous Laguna Seca circuit. In the video, you will hear a glimpse - a howl, a brief clamour, a momentary rasp, if you will - of the V8.

Video: Jeremy takes a Honda NSX around Laguna Seca

And for that reason alone, it is worth watching. Yes, it's only a glimpse, but we haven't heard the new Five fully exercise its vocal chords...

Now share it...

What do you think?

This service is provided by Disqus and is subject to their privacy policy and terms of use. Please read Top Gear's code of conduct (link below) before posting.