Yamaha R15 is really a good bike and I have one and have been using it for quite long like more than 4 years. The value for money is really good to purchase this bike. The best part of this bike it is a 6 gear bike and gives you a ultimate feel of racing a sports bike. The top speed I have gone on this bike is approx 140 on a highway. The mileage of this bike is quite impressive of 32 having a proper maintenance of the bike.
There is one disadvantage of this bike and that is the back seat where your fellow co passenger might feel it is too high to seat and no proper grip to catch. This bike will be not comfortable for long ride and the grip too is a bit put off.
The look is very impressive and the engine is a beast.