twig stuck in the wheel?
worn pads - wear indicator touching rotor
bad wheel bearings
bad halfshaft
imagination running amok?

thats about all I can think of now. random whining or scraping noises can be almost anything when it comes to a car.

 

tighten your lug nuts.

 

nut behind the wheel??

 

if it does it at all speeds you may want to check the backing plate which is a thin piece of metal or aluminum behind the rotor. it could be touching the rotor or like andy said, something could be stuck in it. either that or you're touching metal to metal on you're rotors.

 

Man, funny you mention that. I have sound coming from my front right wheel area. Maybe it's feathering? Very strange sound.

 

well, any type of feathering or cupping would cause more of a grumble sound. but i haven't heard it myself so i can't verify that neither.

 

wheel bearing, jack up the wheel in question and see if there is any play. If so that is the problem.

 

does the sound go with the rotation of the wheel? metal on metal?



check the brake dust shield, they can sometimes get bent and scrape on the rotor.

 

Oh yeah^^^^ mine does!

 

Thanks guys and gals. From the sound that it's making, i think it's metal on metal.

 

Check for a warped rotor or a bent dust shield. I think those are the two most likely problems. If you have a wheel bearing issue, you'll know when you jack up the wheel and try wiggling it back and forth. If there's any play at all, you got a bad bearing.

When you look for a warped rotor, take the pads out and inspect them. They should be worn unevenly. Lay them on a flat surface to inspect the friction contact area for evenness.

 

What year is your 350Z? There were some TSB's issued on the 03-04 models for rear axle problems.

 

Maybe it's a possum.

 

Is it louder when cornering?? If so, most likely a wheel bearing.

 

Second on the possum theory.

 

Warped rotor will make a brushing metal sound if it warps badly enough.

 

I get that exact same noise. I thought it was coming from the front passenger side. My dealer found that my Brembo Caliper on my 06 Grand Touring was bent and replaced it. I am still hearing that noise. I am soooo confused and the dealer just keeps saying that Brembos are like that.
I understand there being noise when I push the broke but this sounds like a metal on metal scrape that gets faster as I accelerate. It usually goes away as I push down on the brake though but as soon as I release the brake, it begins again.
Any ideas on what I can tell my dealer to look for??