[Resolved]  Hyundai Santro Car With MRF Tyre — Humming noise in tyres

The car is having problem of humming noise
It was inspected in Nimbus Hyundai sec -5 Noida , on 12th Aug 2009 while servicing of the vehicle
But i was told to check after wheel balancing & alingment
But problem persists even after that

I recontacted Nimbus on 21st Aug
The bearing for the vehicle were checked & confirmed out
They told that tyres may be having problem

After so many reminder calls MRF person checked the tyre
MRF person confirmed that the tyres are having weight uneven problem , but it was not a tyre manufacturing defect , May be it was due to balancing

But for the confirmation i want to tell u that i had all the 3 free services done for the vehicle as per details given below
1st Service [protected] Hyundai Motor plaza Mathura Road New Delhi
2nd Service [protected] Hyundai Motor plaza Mathura Road New Delhi
3rd Service [protected] Nimbus Hyundai Sec -5 Noida
4th Service [protected] Nimbus Hyundai Sec -5 Noida

All free services were required to check the wheel balancing & alignment check as per manual , Also same thing was checked in 4th service also
Than how the tyre can be faulty due to alignment & balancing problem