I've seen many threads on braking issues but none matching exactly what my experience is, so here goes...

I own a 2001 GLS and this summer I noticed a rather loud screeching sound coming from one of my front wheels. It was sporadic and would come and go, but it was very loud and not present when depressing the breaks. It sounded like a metallic rubbing noise, as it wasn't a constant screech but as the wheels turned you'd hear a screach every revolution.

Low on time because I work all day, I had my wife take my GLS up to Hyundai to see if they could fix it. Now I wasn't there, and my wife isn't the best when dealing with guys at the garage, but they told her I needed new brakes. With 38K easy miles on the car I thought something didn't smell right, so I took it to Midas (who I've worked with before and trusted)

After a long time (45 mins or so), they found that when rust builds up on the edge of the rotor (don't kill me if my terminology is wrong) the little metal piece that's supposed to tell me when my pads are worn rubs on it making a very fricken' loud screeching. They sanded down the rotor, and sent me on my way.

4 months later it's happening again, and is really annoying (well more embarrassing than annoying considering my rims and soon to be CF'd hood).

Does anyone have experience with this issue or a link to a helpful post? I'm tempted to #1 take it to Midas and have them shave the metal piece down so it wont happen again or #2 do the same with Hyundia and ask them WTF.

Have you tried this stuff?
http://www.mz3.net/articles/241.html

My guess is the problem can be solved by using this anti-squeak stuff. Or if the pads are really worn down to the indicators, then you'll be hearing a lot of screeching, and you'll probably need to resurface the rotors and buy new pads.

If you do replace the pads, I'd recommend not buying OEM, but spend the extra bucks to get quality performance pads (Hawk, EBC, etc).

My brakes make a grinding noise after heavy braking, and it sounds like it's for the same reasons as your brake noise. Mine goes away after a little while, and only comes back after heavy braking.... the pads/rotors seem fine otherwise, so I can't see any reason to replace anything until the pads are gone... not really a big deal to me....

It sounds to me like your pads are wearing out and the "squeelers" are going off. They are there to tell you that the pads are getting low. I however would recommend replacing them with the OEM pads. Our cars don't have enough breaking power to utilize EBC or Hawk pads. You'd just be wasting money. And, the OEM pads are a ceramic compound.

Ok there is one person for the OEM pads and one person against them. What does everybody else think? I need some new pads too that's why I jumped in... lol

Guys, my pads are fine. Are you responding to the other people here?

Jose,

My car does the same thing after I have been driving it for a while and the brakes heat up. I took it into the dealer and they said it was due to rusty build up on the rotors rubbing on the caliper. It is annoying when it happens but it won't cause any problems from what my dealer told me. And right now, I am not worried about it cause it is cold here and should keep the brakes cooler where I don't get the noise. It just sounds like when Midas cleaned the edge of your rotors, they didn't do a real good job on it or the rust on your rotors is building back up quickly. Sounds like you just need them cleaned again.

Thanks wildman92, I think I'll just have Midas give it another shot and do it right this time.

Rust builds up on the rotors all the time. Everytime it rains, the rotors will rust pretty heavily in less than an hour. Then you go driving and the rust wears away almost immediately. One thing rust can do is lead to uneven deposits and cementite in the metal, but I don't think it's the source of your particular problem. Uneven deposits/cementite is a source for brake pulsation, not brake squeaking.

A common misconception is that squeaky brakes is caused by a problem with the frictional surface at the pads or the rotors. When in fact it's often caused by vibration & movement of the pads in the calipers. That's what that anti-squeak goo is designed to solve.

I still don't understand what Midas did, or what they thought the problem was.

As for the OEM pads, I'm still using them. But I know performance pads will grab better. And from what I've heard they will also be easier on your rotors than our OEM pads. I can believe that as the scoring in my rotors has gotten bad pretty quick. And a lot of people give the Hawk HPS and EBC Greenstuff pads a lot of praise for their improved performance, yet streetable characteristics.

P.S. Maybe Midas still is your best bet if they were actually onto the problem... but ask them about the anti-squeak stuff while you're there.

The problem that Jose and myself are talking about is if you look at the edge of the rotor, not where the pads make contact, the rust builds up there. As you drive, the rotor heats up and expands. This causes the rust to rub against the caliper. If you let the rotors cool down, the noise goes away. This can also be fixed by having the edges of the rotors cleaned up. The anti-squeal that everyone is mentioning will not fix this issue.

Interesting, I wouldn't have thought there could be so much rust buildup to the point that would happen.

Performance pad are only good when coupled with performance rotors. Performance pad are good when they are heated to the working temperature that it was intended to be used under. This reduces brake fading. Eg: If you auto-cross your car then its worth the investment.

Interesting, I wouldn't have thought there could be so much rust buildup to the point that would happen.

I wouldn't have thought that was happening either, but apparently it does.

Yeah I think wildman92 has got it, I'll talk to Midas and see what they tell me and report back.

I think I'm havung the same problem. I have an 01 elantra. Lately, whenever I start the car it won't move much until the egine kicked on after a minute no matter how hard i pressed down on the gas. But now it makes a screeching sound when I'm turning the wheel all the way. Could the two problems be related?