Vibration at a speed in between 60 to 80 kmph - Unique problem

Vibration at a speed in between 60 to 80 kmph - Unique problem

Look and Style : Good Comfort : Ok Pickup : Ok Mileage : Good Best Features : Small vehicle easy to drive in city roads and small lanes. Needs to improve : May be the pick up Overall Experience : My car has a unique problem, when ever I run the car at a speed in between 60 - 80 kmph it gets vibrates. Significantly it occurs only at a speed in between 60 to 80 kmph and not otherwise, Very strange. I gave my car for rectification of the same but the authorised service agent and the engineer from Maruti Suzuki compny both failed to rectify the same. Though they have changed clutch and tyre rims but still the problem continues. It is confirmed that the problem has no solution.