A guy from Ranchi who owns a Yamaha R15 has shown how good this bike is by doing stoppies at crazy speeds. Certainly the guy is good with the bike. He is a stunter from street demonz. He even did a stoppie in standing water, however we wont advise you to try this since all this has been done after lots of practise :)
Check out the video of the guy doing the stoppie.