For about the past year this sound has been getting worse.. Can't seem to figure out what is causing it. I've replaced the calipers, rotors, pads, cv axle and hub/bearing but haven't been able to reduce the sound. It doesn't seem to be related to suspension.. It almost sounds like a very large rock is grinding into my rotor but that's not the case. The speed of the grind is also faster as the car moves quicker..

Below is a link to a video of the sound recorded... Any ideas?

This is a 2000 Acura tl with about 170k miles on it


It's actually much louder than it sounds in the video.

 

Check the heat/dust shield on your knuckles and make sure your axles are seated properly?

 

Tires?

 

I'm positive it's not a dust shield issue, this isn't a whizzing grinding sound, it's more of a low/deep but loud variable grinding. I also had my mechanic reseat and reseal my axle once it started leaking trans fluid.

However could the tires really be the issue? I've definitely gotten new rubber on them since it started (also have rotated the tires) and I'm sure the tires aren't rubbing against anything.. it seems more like metal on metal. I've already dumped like $500 on parts trying to fix it and I'm completely clueless lol

 

Jack the car up and spin by hand to see if you can hear anything.


That'll rule out tires.


And you threw money at a problem rather than troubleshoot it properly

 

Get under the hood and start banging on things with a wooden hammer. Get under the car as well. Your exhaust might be loose, but you are hearing it in the front. Also, tell us if you are feeling anything in the cabin, and where you are feeling it. I bet it's the exhaust.

 

Sounds like something rotate related. I know that's not much help. Gum under your tire... I don't know.

 

You'll probably need a mechanic's stethoscope for this.

It sounded like the grind got louder when going around right-hand turns? Is the sound more prevalent in the driver's side vs passenger side? You mentioned your axle seal was leaking. Was your differential damaged?

EDIT: Also you might want to grab a dial indicator and check your runout.

 

I would get the car up on jack stands. With the tires on see if there is any play in them sideways. Check all four tires.

Then I would start looking at the suspension. These are older cars now and things can wear out or break. Make sure everything is tight. Check all the bushings.