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If it is not a sealed bearing then this is normal, in fact bearings must periodically be repacked. However if it is a newer vehicle with sealed bearing then this could mean a possible seal that has pushed out.
This buzzing noise is likely a faulty wheel bearing. The bearings are moving around randomly and need to be replaced.
could be your wheel bearings
most likely a wheel bearing, but im having trouble as well lol. i have the classic wheel bearing humm..replaced both left and right bearings and still have the noise..i cant figure it out.
It can be very dangerous. You certainly don't want to be on the freeway when the bearing finally goes and the wheel falls off. Yes. Definately. If the grease is completely gone, the bearing can heat up and get so hot that the wheel could lock up and cause the car to spin out of control.
Could be wheel bearing, differential bearings or maybe exhaust has moved and is vibrating on chassis or body.
The whistling sound made by your car could be caused from brake dust. Another reason may be from a bad wheel bearing that needs to be replaced.
If you noticed it has a spring loaded tensioner just for that reason, To keep things from wering out so soon. I would say that it was time for the bearing to go out.
wheel bearing
The bearing will eventually overheat and sieze or in severe cases could break the axle. Fix it ASAP.
If the noise is a squeaking sound, it could be coming from the bearings in the blower fan. It could also be coming from a worn bushing or bearing in the blower motor.
It could be several things, your bearings could be under a pre load, which means there is exesive pressure on them caused by them being over tightend, it could also be as simple as a brake hanging up on the drum or disk. you may have a bent rim possibly but that would cause the car to vibrate. Also you may have a worn spindal, the shaft that the bearings slide onto. You could possibly have a brearing catching or binding up. I would definitely have it looked at so you don't have a bearing go out because it could mean you lose you tire completely.