New rubber

If you’re about to fit new tyres to your precious motorbike, think carefully before opening that throttle too quick, new tyres need running in for about 100 miles at no more than 60mph, with no sudden breaking or changes of direction. This is down to chemicals used during manufacture of the tyre and the smooth new rubber surface, some bikers recommend using a pumice stone or sandpaper on the tyre to give you more grip.

Unfortunately no one told this guy!
Unluckily for us the YouTube user has stopped embedded videos, check out the link for the video
Brand new Gixxer crashed