@addi2103 .. I would suggest you to go to a good mechanic and say him to check "CHAAL" in all four wheels .. specially the front ones. Sometimes when there is a problem in the Spindle or Barring causes vibration. Spindle is located behind the hub and wheel barring is placed in the middle and it should not be loose. If there is CHAAL in any of the four wheels .. it is the cause of vibration.
FYI, it won't take much time to check the CHAAL in the wheel .. maximum 5 to 10 mints. (I dont know what do we call "CHAAL" in eng so i have used it repeatedly :))