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Mike S.
Mike S., ASE Certified Technician
Category: Buick
Satisfied Customers: 7568
Experience:  A.S.E. certified
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2004 LeSabre. New Sim metallic pads and recently turned

Customer Question

2004 LeSabre. New Sim metallic pads and recently turned rotors. When brakes warm up, they groan , really loud, from about 4mph to 0. If I can take the time to stop really slowly, they don't make the sound.
JA: How old are the brakes? How many miles on the car?
Customer: 2 month old pads, 6 weeks on turned rotors, 148k
JA: Are you fixing your LeSabre yourself? What have you tried so far?
Customer: I replaced the brakes and had the rotors turned. Haven't really tried seriously to fix the noise
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 2 months ago.
Category: Buick
Customer: replied 2 months ago.
I accidentally mistyped on my email address. Can I start over please?
Expert:  Mike S. replied 2 months ago.

Hi, I am Mike, welcome. I'm reviewing your question.

Expert:  Mike S. replied 2 months ago.

Are these the original rotors and if so or even not, did they check to make sure they aren't too thin now?

Do you have a receipt showing the thickness now?

Customer: replied 2 months ago.
I'm not the original owner so I don't know about the rotors. They had plenty of life on them when I had them turned 6-8 weeks ago.
Expert:  Mike S. replied 2 months ago.

How do you know they had plenty of life on them unless someone measured the thickness.

Customer: replied 2 months ago.
I personally don't know what the requirements are for thickness but I trusted the the guys at O'Reilly Auto to tell me if they were thick enough. If they weren't, I'm sure they would have tried to sell me new ones
Expert:  Mike S. replied 2 months ago.

The minimum thickness after turning is 1.224" and discard at 1.209"

Expert:  Mike S. replied 2 months ago.

I don't know if they knew to check or not, ask them.

Expert:  Mike S. replied 2 months ago.

Or purchase a micrometer and check them yourself.

Customer: replied 2 months ago.
you're not gonna move forward until I measure the rotors? I don't have the equipment to do that. Just bill me what you have to and I'll figure it out on my own
Expert:  Mike S. replied 2 months ago.

Was O-Riley's also sure to put a finish fine cut of them?

Customer: replied 2 months ago.
I'm done here. Just let me know how much you're charging to tell me to buy a micrometer
Expert:  Mike S. replied 2 months ago.

I said borrow one.

Customer: replied 2 months ago.
I don't want your help anymore. Just tell me how much you're charging
Expert:  Mike S. replied 2 months ago.

Either that or take one off, take it into a shop or back to O'Riellys and ask them to measure it.

Expert:  Mike S. replied 2 months ago.

That way you will know for sure and I suggest checking them both.

Expert:  Mike S. replied 2 months ago.

Your phone call request failed.

Customer: replied 2 months ago.
Are you even reading my responses?
Expert:  Mike S. replied 2 months ago.

You made a initial deposit, that is all.

Customer: replied 2 months ago.
OK, thanks. I'll look for answers elsewhere
Expert:  Mike S. replied 2 months ago.

Did you want me to tell you it wasn't the rotors?

Customer: replied 2 months ago.
I'm guessing you're having a bad day and that's the reason for your sarcasm. Hope it gets better.
Expert:  Mike S. replied 2 months ago.

No, I am just convinced it's the rotors since that is what you mentioned was done. I do see the pads were done first then like 2 weeks later the rotors turned. Did the brakes make a noise before the rotors were turned?

Customer: replied 2 months ago.
That's why I had the rotors turned
Customer: replied 2 months ago.
It stopped for about 10 days then started again
Expert:  Mike S. replied 2 months ago.

Ok, well maybe it is not them rotors then.

I have heard of people grinding chamfers on the edges of pads before to help reduce noise.

Expert:  Mike S. replied 2 months ago.

Unless of course these pads already have chamfers.

Customer: replied 2 months ago.
What is a chamfer? FYI it only does it when the brakes warm up.
Customer: replied 2 months ago.
they have those edges
Expert:  Mike S. replied 2 months ago.

which pads were they?

Expert:  Mike S. replied 2 months ago.

where these the front or rear or both?

Customer: replied 2 months ago.
I replaced both front and rear pads, new rotors on the front. Sound definitely sounds, and feels, like its coming from the rear
Customer: replied 2 months ago.
Don't know why my payment info is not working for a phone call. I've double checked it twice
Expert:  Mike S. replied 2 months ago.

actually just 3

Expert:  Mike S. replied 2 months ago.

wagner, brake best or standard?

Customer: replied 2 months ago.
lol, I had the rotors turned there but I bought the pads at AutoZone.http://www.autozone.com/brakes-and-traction-control/brake-pads/duralast-brake-pads/27749_420698_1610. Maybe the front ones have the camper edge
Customer: replied 2 months ago.
Camfer (stupid auto correct)
Expert:  Mike S. replied 2 months ago.

I would change them to them with a chamfer edge.

Customer: replied 2 months ago.
Could you explain, in lay mans terms, what that does?
Expert:  Mike S. replied 2 months ago.

Remove them rear pads and return them for a pair with chamfers on them.

Customer: replied 2 months ago.
I understand what your are saying to do, I'm asking what the camfer edge does
Expert:  Mike S. replied 2 months ago.

It helps quiet them down.

Expert:  Mike S. replied 2 months ago.

I am reading also about shims.

"KFE Brake Systems announces the newest street brake pad: the Quiet Advanced Brake Pad series. This line of brake pads has many features that benefit the daily driver, starting with its advanced Wolverine dual-rubber shims. Unlike other low quality shims, Wolverine is the world’s leader in friction noise reduction. The shims’ special patented design and high quality materials used in the production of each shim help reduce vibration generated during caliper piston and brake back plate contact. Vibration causes a large portion of the noise you hear during braking. With these shims, over brake noise will be reduced. Like all of our brake pad lines, positive molding and thermo scorched manufacturing processes are used. These features will help give the brake pad a more consistent bite and decrease the time for break-in process. Other features include slotted and chamfered edges on the design of the brake pads. The slots in the brake pads help clean dirt and debris off the rotor, which will help increase brake contact surface and increase brake bite. Chamfered edges help prevent the friction material from lifting off the back plate; this will ensure a long lasting life for the brake pad. For details please select"

Expert:  Mike S. replied 2 months ago.

Did that answer your question? If so, kindly leave me a positive rating, so I get credit. After all, you have already made the deposit.
If you don't, the deposit you made will just sit there and I won't get my share of it.

Customer: replied 2 months ago.
I just spoke the guys at AutoZone, I can get the new pads but they say they think my caliper is sticking, does that sound like a possibility?
Expert:  Mike S. replied 2 months ago.

No.

Customer: replied 2 months ago.
Loose caliper bolt. Pads and rotors are fine
Expert:  Mike S. replied 2 months ago.

It was a lose caliper bolt?

Customer: replied 2 months ago.
Expert:  Mike S. replied 2 months ago.

Who's fault was that? Who installed those rotors and pads?