hmm...is very easy to discribe... you watch fast and furious?? the orange supra... when racing with black mustang almost ending of the movie....thats the sound like.....
If you are in 0.7 bar and above, you will get a very loud and clear sound of it...normally people wouldnt get this coz the price of it is more expensive than SARD "duck mouth" type...
You've heard of those old stock AD07 and PP2 tyres in the market right? I'm currently running on Yoko Decibel DB 2010 week 29 tyres. I didn't realize the age of the tyre until yesterday and they are "made in Japan"...