Matt Farrah of DRIVE takes the BMW Z4 sDrive35iS around the track and shortly after, he got a run in a rather special Z4: the Z4 GTD.

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Built by Turner Motorsports, this BMW Z4 actually won the GTD racing series earlier year. As you may not know, the GT Daytona (GTD) is a racing class that combines the Grand-Am GT & GX classes with the Porsche 911 GT3 Cup cars from the ALMS GTC class and cars built to FIA GT3 specifications.

Racing exclusively BMW models, Turner Motorsport is one of the most recognizable teams in racing series, as private teams are concerned. Turner Motorsport is also one of the largest BMW performance tuning facilities in North America. The company also runs a production car racing team.

Turner Motorsports is also the second most prolific BMW privateer racing team in the world, second only to Schnitzer Motorsport, who runs factory BMW DTM cars in Europe.

So, how does a road legal BMW Z4 compares to a track prepped BMW Z4? Find out in the video below!