Hi,

A weird sound is coming from the rear tyre/chain when it starts to roll. It's like something is rubbing when the tyre rolls. I am not able to pinpoint the location nor the service center people. At the time of deceleration a humming sound is coming and it's not from road-tyre friction. Can you help? I have cleaned & lubed the chain, tightened it also but still the sound is coming. Initially I thought something must have stuck in disc pad but upon opening it no such things observed. The problem started after second servicing.
A small incident happened at that time- I told service guy to rub the brake pads. They didn't have sand paper with them & this Einstein rubbed it against ground. Could it be the reason? Please Help

Thanks,

Ritabroto