help needed!!!!!

[m3f_bbokim]

i want to know if anyone has or had this problem.

my 95 m3 (140000 miles) still runs well.

but recently i hear annoying noise from rear or somewhere from rear of a car.

noise comes clearly whenever i disengage the gas pedal. if i push a pedal, sound go away. before i go to any shop, i wanna know some basic idea so that i wouldn't get ripped off, i hope.

plz gimme some of your wise opinion and insights.

thank you

[m3f_Sirius_880bd69485]

What kind of noise is it? A humming noise? Crunching, baning.. clashing.. ripping... rumble?

[m3f_bbokim]

i believe it is more like a humming noise... i don't hear any kind of metal breaking sounds. feel like something's not turning smoothly...

[m3f_ziggy]

I get something similar on trailing throttle at higher RPMs. It's not loud, just annoying, but my gear shifter kinda picks up a vibration. Maybe I'm just paranoid on the gear shifter buzz. Milage is at 167,000 kms. Transmission? rear end differential?

[m3f_Sirius_880bd69485]

Humming noises from the rear are generally bearings. My experience has lead me towards wheel bearings or center bearings. If you can get the car on a lift and stand under it, you can listen to it while someone revs that car