I M FRM BD................................HERE IS A GENUINE SCARCITY OF MECHANIC OF BIKES LIKE R15.........................THE MAIN THING IS THAT I GOT THE BLUE COLOR R15 , 2 MONTHS AGO...........AT NOW I FACED A PROBLEM OF HEAT SIGNAL IN MY BIKE.............THE THING IS AFTER A CONTINUOUS BIKING OF 10 TO 15 MINUTUES WITH THE SPEED OF 70 TO 100 KM/H THE BIKE IS SIGNALING THE HEAT METER..............................WHAT IS THE CURE OF THIS PROBLEM...............BY THE WAY I WANNA TELL U THAT I HAVE EXCHANGE REAR TYRE WITH A LARGER TYRE.....................PLS GIVE ME SOME SUGGESTION..............I BADLY NEED IT...............