It has a very nice growl but it doesn't seem to be very smooth in the turns. I watched TTRS go round at Nurburgring last summer. Same growl and looked much better on the track.

RS5
http://link.brightcove.com/services/...id=20464714001

TTRS
[ame]http://www.youtube.com/watch?v=X4IOcFeFBbg[/ame]